You'll need a 12v dc controller, router speed controllers plug into the mains afaik.
I've just ordered a 12v 12A Meanwell smps for my Wolfgang spindle after much frustration trying to get it to work with whatever power supplies I had already. A 500w pc psu quoted at 12v 27A wouldn't drive it but the 5v line had the spindle turning.
I did suspect the motor at first but a cordless drill battery had the Wolfgang spinning just fine.
This might be ok for speed control:
12V/24V/36V 10A DC Motor Speed PWM Control Controller on eBay (end time 09-Jul-11 06:59:20 BST)