Some reading for you:
http://support.microsoft.com/default...EN-US;q311755&
http://www.pchelplive.com/sections.p...ticle&artid=87
http://www.pchelplive.com/sections.p...icle&artid=100
I think the "bootfix" referred to is an option from the repair screens when booting from the XP CD
. . . Gary
[p.s. ...the "upperfilters" and "lowerfilters" Registry entries come in handy when cd drives mysteriously disappear under XP, also
. . . and post again if these articles don't lead to happiness!]