I have a Sony VAIO VGC-RB44G computer, with Windows XP MCE 2005, and Service
Pack 2 already pre-installed. I have having some problems with Internet
Explorer, it is loading slow and when popups come up it freezes for about a
min. Can I use my Service Pack 2 CD and install Service Pack 2 again?

P.S. Service Pack 2 is not listed under Add/Remove programs.

Thanks In Advance