I have an HIS Radeon HD2600PRO ICE-Q Video Card with a factory overclocked memory clock and core clock (650 core / 1050 "effective" memory clock). While digging through the ATI Catylist control center, i found ati overdrive over clocking utility. When i went in there, it gave me a warning that over clocking the video card may mess up my pc. So here's the question:

Can I overclock the card without messing up my pc? I have one 120mm rear exhaust fan, and the video card has the ice-q cooler on it (Newegg.com - HIS Hightech H260PRQT512DDN-R Radeon HD 2600PRO 512MB 128-bit GDDR2 PCI Express x16 HDCP Ready Video Card - Desktop Graphics / Video Cards). I also have the stock cpu cooler on my e7200, and no other air flow. With this config, is it recommended to over clock the video card? Thanks for your suggestions.