pitched white labs wlp800 lager yeast
Only 1 sleeve, without making a starter first?
What was the best-by date on the package?
Has it been kept refrigerated all the time (bought at a local homebrew store), or sent through the mail?
For reference, here's a yeast pitch/starter calculator, to estimate the number of healthy yeast cells to be pitched:
http://www.brewunited.com/yeast_calculator.phpSet the first cell to "Lager (1.5 million cells per ml)."
Your yeast package (sleeve) contains 100 billion cells at manufacturing (6 months before the best-by date). It's slowly downhill from there on.
Purepitch packages loose about 3-6% of their viability per month.
Leave it at 62-64F, until you see foam appear on the beer surface. That will tell you the yeast is working. At that point slowly drop the temps to 56-60F.
If you don't see anything after 3 days since the initial pitching,* it's time to pitch a dry yeast, such as Safale W-34/70. Use 2 packs. for a 5 gallon batch of Lager. Pitch it dry according to their instructions, do not rehydrate.
* Peek through the airlock hole, with a flashlight shining through the side of the fermenter (a brew bucket?). Don't keep opening the fermenter.