If you're on a budget I would go with one of the suggestions already given and either go with an sm58 or an sm57, whichever you can find cheaper. As for a mic pre, on the cheaper side there is a company called art that make some nice cheap ones. I think my buddy bought a 2 channel firewire pre from them for $30 and considering the price I was surprised by how nice it sounded.
You'll definitely want to invest in a pop filter to get rid of the pops that come when emphasizing B and P sounds. If you want to be really thrifty you can make your own out of used pantyhose and a hanger (form a hanger into the shape and put the pantyhose over top). That could always be fixed in editing of course if you know what youre doing but if not go with the pantyhose
If you're on a bigger budget i'd go with an elektro-voice RE20 mic. I can almost garauntee you'll love the sound of that mic. It's what almost all radio broadcasters use on their voice cause it's very dark, and bassy sounding. It'll make your voice sound like god
Edit: Just realized this is an old thread that was revived by an out of place post. Sorry. haha