cant he run his comp at 100fsb (12x100)? but then what would be the point of getting a 133fsb chip.. so yeah.. get better ram.. my experience with crucial is they sent me 2-256meg pc133 cas2 ram which both goes to pc150 cas2(222)~!!(maybe i just got really lucky) i highly recommend
if you got some high quality pc100 ram, maybe it will be able to handle 133, but most likely not any higher.. so maybe you should try it out before you buy new ram
oh yeah.. also like hellboy said(haha).. get a kt133a motherboard for optimal performance