Good to see you have solved your problem here. There is always lots of good folks willing to help here too.
I will add this for anyone thinking of using the PC power supply for powering what ever they might want to. I found these on ebay a few months ago and had to have a couple to add to my already way too long list of future projects. I just can not resist these things when a nifty one comes along and the prices are so enticing too. PC Power Supply Adapter. Just a FYI to go along with GRJ's post above maybe it will help someone and it sure makes the conversion easier.