OK, I looked at steampowered.com's support and found that they finally discovered my issue. I had been having tons of freezing while playing Source or even HL2 and looping sounds and stuff, and they said it has to do with the sound card. Since I have an onboard chip though, I disbaled it in the BIOS and now when I play (with no sound of course), I get no freezing or anything. So now I gotta go out and buy an actual sound card. Also you may be wondering why I added monitor, well the monitor I have now is sh*t and like 5 years old and I need a new one bad. So I narrowed it down to two monitors and one sound card, but I wanna see if this sound card is ok too.
Or this monitor...
They both have great resfresh rates which is also something I'm really looking for since the 17in I'm using now does 1280x1024 at 60hz which is horrible and making my eyes bleed.
And there's the sound card. I don't really need anything spectacular, just something that will stop all these game problems, but it is good right, cuz I don't know much about the "value" version. Thanks a lot people!