My experience with Office XP...is that the CD is required anytime major modifications are made. The CD has a lot of the optional features and files which must be accesses when changes occur.
I have a CD so it's not a nuisance for me.
If Office came preinstalled...I don't know how those versions work.
You might visit the Office website and just do a direct download of the SP, http://www.microsoft.com/downloads/details...ylang=en...then
install it from the desktop.