ok, you don't want to spend money so you can't get a new bike... but you don't want to do work so you can't convert another.

um... then don't take any of our advice and hop back on your road bike. sorry dude, either you have to do the work or you have to pay a little extra. you could always do what the bianchi person did. buy a new bike, wreck it learning to ride fixed, then sell it for almost as much as you payed for it. other than that i'm pretty much fresh out of ideas on how to get you on a fixed gear bicycle. maybe other people have an idea.