Hey, I am trying to convert one of my old roadies to a fixed gear and have a couple specific questions about the process. i have read sheldon brown's article several times through and have tried to search the older posts, but still have some questions.

This being a pretty low-budget build-up, i'm looking for a cheap rear wheel to use on this conversion. NYCbikes sells a budget track wheel with cog and lockring for $60, have any of you guys had experience with this wheel specifically? http://www.nycbikes.com/item.php?item_id=442

Also both the bikes i am thinking of converting both have 3piece cranks with double chainrings. in the conversion process, i want to get rid of one of those chainrings - will i need to replace the bottom bracket? one of the bikes is a peugeot from the 80's - will that have the french threading problems? or was that just earlier french bikes? The entire front chainring subject of fixed gear bikes is in the dark for me. what are my options?

Thanks for entertaining all my silly questions