I can't afford a mill right now and have some small projects that I
need semi presision drilling for I was thinking about getting one of
these milling/drilling tables for on my drillpress however they have U
slots and im not sure what that is.

heres a link http://www.use-enco.com/CGI/INSRIT?PMAKA=201-2536 sears
also has one same thing basically this one is just cheeper. Anyhow hope
one of you knows I want to play my enco order tonight got a bunch of
other lathe stuff I need to order.