sorry for the cryptic msg. what I ment to say was, Can you upgrade the standerd p4 in a dell 4500s, my system is standerd with the exeption of 2Gb of memory, my os is xpsp3. Would it be possable to upgrade the cpu?,and like you said would it be worth it ? should I just buy or build new ? Any help would be greatly appreciated. THNX P.S. yes, the driver I needed was for a modem, but I scrapt it.