two types of clips
there is two types of clips that i have seen for the standard socket7 processor heat sink. one has a dangly thing on one end that allows it to be unclipped. the other has to be removed with a tool. i personally use a pair of needle-nose pliers. i grab the side of the clip next to where it locks onto the tab, and twist it sideways. the only draw back is that you will need a new clip.
as far as being gentle, i have been pretty rough with them and never have i killed one, but i know it can happen.
hope i helped
~BoB~