Dude, it would probably be faster/cheaper for you to part that one out, sell the pieces on e-bay, save your pennies, and buy a new fixie on bikesdirect for $300-350, especially since you don't really know what you're doing.
If you buy the new fixie, you're ready to go after spending $300-350 with a brand new bike that's ready to ride.
If you do the conversion, it's going to be:
Bike - $60.
Wheels - $100 if you just get a rear track wheel, $200+ if you go for a new set of 700c wheels in shiny colors, in which case you may also need new brakes.
Fork - $50
Cog/Lockring - $15-40
Chain - $10
Handlebar wrap- $0(used inner tube is fine)-$15.
Pedals/Toeclips/Toe Straps - $20-40.
Crank - $0 (if your existing one has the right chainline (or does if you use spacers) - $85+ if you need a new crank/bottom bracket.
+$50 or so to have it all built.
Total that up and you're at $300+ on the conservative end for the conversion.
Or you buy this one for $319
http://www.bikesdirect.com/products/.../clockwork.htm, spend a few minutes putting the handle bars on and doing the final assembly with an Allen wrench, and you're good to go.
It's your call, and building bikes is tremendous fun if you've got access to the right tools, but paying somebody else to cobble together a conversion may not be the best bet if you're on a budget.