I've never attempted ales at lager temps. Might have to try that one.
HB's right. To achieve my lager temps (w/lager yeasts), I just took my basement fridge and put a cheap, christmas light timer on the plug. Regular old fridges seem to keep a temp of about 38-42F, which is a bit too cold for lagering, so I fiddled with the timer to get it to where I was keeping a fairly constant 50-52F.