I’m still running Win98SE. Yeah….I know...I know..... I am considering upgrading my P4 1.8A to something faster. Will I have to upgrade my OS as well? Was o/c-ing the 1.8 to 2.4 but it’s not completely stable. My m/b is a Gigabyte GA-8IEXP (ver 2.0) which has the 845E chipset and 400/533 FSB support. Also, running Crucial DDR PC2700 512MB memory. The Gigabyte website says the m/b supports the P4-Northwood 3.06G (533FSB) Hyper Threading CPU. I don’t do a lot of multitasking, but I do a lot a CD burning and game playing. Would this upgrade be possible or worth the dough? Really not interested in upgrading my OS or m/b. Just looking for a quick and cheap CPU upgrade with bang for the buck! Any feedback would be appreciated!