As promised, here are the Half-Life and CS Retail ATI "overflow" fix patches. Only download this patch if you have an ATI video card and are having "overflow error" problems. Please make sure that you download the correct version of this patch -- depending on whether you have CS Mod version or CS Retail. Also keep in mind that this is a HL engine issue (not CS specific), so this will affect HL and all mods:
Download: Download Patch