When i try to record voiceovers they are crappy, fuzzy, and have alot of ambient noise behind them. How can I make them as good as the original voices or atleast almost as good?

I know where you can find a few enthusiasts in this department http://tesalliance.org/forums/index.php?/forum/74-voice-actors-project/

I recommend checking out the site alt3rn1ty linked to, and I can also recommend this freeware: http://audacity.sourceforge.net/, for polishing and enhancing your voice work.

I already use audacity so thats good. could you recommend some plugins for voice work? Ill check out that link.