Need help with just about everything

Okay, I am having bukkit problems as you might know
but before I say the issue
I am running Windows 7 Ultimate 64 bit
the version of bukkit that was most recently released
8 gb ram (4 gb running on the server)
and a crap ton of plugins which I think might be causing the problem
so this is my error message

Code:

2011-03-04 15:55:31 [INFO] Starting minecraft server version Beta 1.3
2011-03-04 15:55:31 [INFO] Loading properties
2011-03-04 15:55:31 [INFO] Starting Minecraft server on *:25912
2011-03-04 15:55:31 [INFO] This server is running Craftbukkit version git-Bukkit
-0.0.0-458-g557f3d2-b440jnks (MC: 1.3)
2011-03-04 15:55:31 [INFO] Preparing level "world"
2011-03-04 15:55:31 [INFO] Preparing start region
2011-03-04 15:55:31 [WARNING] Using the stupidly long constructor com.bukkit.phi
l.creepernerf.CreeperNerf(PluginLoader, Server, PluginDescriptionFile, File, Fil
e, ClassLoader) is no longer recommended. Go nag the plugin author of CreeperNer
f to remove it! (Nothing is broken, we just like to keep code clean.)
2011-03-04 15:55:32 [WARNING] Using the stupidly long constructor zerodps.iMonst
er.iMonster(PluginLoader, Server, PluginDescriptionFile, File, File, ClassLoader
) is no longer recommended. Go nag the plugin author of iMonster for iConomy to
remove it! (Nothing is broken, we just like to keep code clean.)
2011-03-04 15:55:32 [INFO] LWC  [v1.57] Loading shared objects
2011-03-04 15:55:32 [INFO] Config       [v1.57] Loaded 12 config entries
2011-03-04 15:55:32 [INFO] LWC  [v1.57] Native library: lib/native/Windows/amd64
/sqlitejdbc.dll
2011-03-04 15:55:32 [INFO] [Permissions] version [2.1] (Handler) was Initialized
.
2011-03-04 15:55:32 [INFO] WorldGuard loaded.
2011-03-04 15:55:32 [INFO] Loading BetterShop version 1.5.3...
2011-03-04 15:55:32 [INFO] config.yml found!
2011-03-04 15:55:32 [INFO] Loading PriceList.yml
2011-03-04 15:55:32 [INFO] Empty PriceList or error reading PriceList
2011-03-04 15:55:32 [WARNING] [BetterShop] WARNING: iConomy not yet found...
2011-03-04 15:55:32 [WARNING] [BetterShop] WARNING: Permissions not yet found...

2011-03-04 15:55:32 [INFO] BetterShop version 1.5.3 is enabled!
2011-03-04 15:55:32 [INFO] CreeperNerf enabled.
2011-03-04 15:55:32 [INFO] ºeLoaded Essentials build 246 maintained by Zenexer,
ementalo, Aelux, and Brettflan
2011-03-04 15:55:32 [INFO] [BetterShop] Attached to iConomy.
2011-03-04 15:55:32 [INFO] [iConomy] Configuration Integrity Start:
2011-03-04 15:55:32 [INFO]     - System.Interest.Enabled is null or missing, Def
aulting to: false
2011-03-04 15:55:32 [INFO]     - System.Interest.IntervalSeconds is null or miss
ing, Defaulting to: 60
2011-03-04 15:55:32 [INFO]     - System.Interest.FlatRate is null or missing, De
faulting to: 0.0
2011-03-04 15:55:32 [INFO]     - System.Interest.MinimumPerInterval is null or m
issing, Defaulting to: 1
2011-03-04 15:55:32 [INFO]     - System.Interest.MaximumPerInterval is null or m
issing, Defaulting to: 2
2011-03-04 15:55:32 [INFO] [iConomy] Configuration Integrity End.
2011-03-04 15:55:32 [INFO] [iConomy] Logging is currently disabled.
2011-03-04 15:55:32 [INFO] [iConomy] v4.3 (Lind) loaded.
2011-03-04 15:55:32 [INFO] [iConomy] Developed by: [Nijikokun, Coelho]
2011-03-04 15:55:32 [SEVERE] ENTITY_DAMAGEDBY_ENTITY (Is it up to date?)
java.lang.NoSuchFieldError: ENTITY_DAMAGEDBY_ENTITY
        at zerodps.iMonster.iMonster.onEnable(iMonster.java:50)
        at org.bukkit.plugin.java.JavaPlugin.setEnabled(JavaPlugin.java:140)
        at org.bukkit.plugin.java.JavaPluginLoader.enablePlugin(JavaPluginLoader
.java:426)
        at org.bukkit.plugin.SimplePluginManager.enablePlugin(SimplePluginManage
r.java:187)
        at org.bukkit.craftbukkit.CraftServer.loadPlugin(CraftServer.java:79)
        at org.bukkit.craftbukkit.CraftServer.loadPlugins(CraftServer.java:60)
        at net.minecraft.server.MinecraftServer.e(MinecraftServer.java:187)
        at net.minecraft.server.MinecraftServer.a(MinecraftServer.java:174)
        at net.minecraft.server.MinecraftServer.d(MinecraftServer.java:120)
        at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:227)
        at net.minecraft.server.ThreadServerApplication.run(SourceFile:366)
2011-03-04 15:55:32 [INFO] Done (1778370226ns)! For help, type "help" or "?"

how can I start to fix this,
Please help ^.^

 

Remove or update iMonster.

Permissions is also out of date, and I'm sure a few more things are as well...

Also, make sure you have x64 Java. Use x64 IE to go get it if you don't KNOW that you have it.

 

I know I have it, I removed it umm also a quick question, what can i use to rank people up in game