Question about uninstallation of games...

Hi everybody, this question seems more fitting to games than software so I'm asking here. I have Steam which I use to play Half Life, and its add ons (opposing forces, blue shift, team fortress). I am going back to school in a few weeks and I am trying to get my laptop back into perfect condition, so I'm getting rid of games I've played, cleaning things, etc. Anyways, I am fine with keeping Steam on my computer since its a small program but I'd like to uninstall Half Life, and its add ons. The question I'm having is, when I installed Half Life (and the addons, they all came on one cd the anthology1 and had one registration code)...so is there anything I need to do so that if I want to I can play those games again without it telling me my game has already been activated? I assume that as long as I keep Steam and my account, I shouldn't have a problem...is that right?

 

Nvr mind, I figured it out, sorry for the pointless post!