Go here for the cheapest wheels i could find and have not had a problem with myself.
http://stores.ebay.com/wheelandsprocket
(i picked for free shipping to u.s. but just find a cheap deal on track wheels.)
youll need a lockring and cog from somewhere and will also will need a tire and tube.
aquire whatever chainbreak you can and a new chain.
then with a few hours of simple work youll have it how you want.

Edit: just remove the larger ring on your bb and shorten the chain to fit on the smaller ring and cog tightly. may have chainline problems but you can fix those if they come up.