here is some advice that is
real advice. REALLY.
if you are too lazy to do even the most basic research, or too poor to buy a couple of cfls and the proper fixtures, then there is a 99.9% chance that you will have an EPIC FAIL at growing marijuana. (but there is that .1% chance...)
i'm not saying that this advice applies to you, so please, do not be offended.
and yes, a desk lamp will hold a cfl just fine! Good Luck!