Here are some links I've found handy for dealing with this AFM.

	Gary Steele's page about the AFM.
	Topometrix's old web site with information on our AFM, as mirrored by Gary.
	TM Microscopes is the new name for Thermomicroscopes, which was the new name for Topometrix. Worse than most banks.
	SPMProbes.com seems to be a pretty good source of tips of various types. Interestingly enough you buy them through Yahoo Shopping.