I just got a new PC down here with windows 2003 server installed on it i started to prepare it and while installing the VS 2005 SP1 for 20 minutes it fired an error in my face my problem is i didn't read the message and started to reinstall again after a restart for the machine and here again another wasted 20 minutes and the error fired again i closed the message without reading it again and i have consulted some colleague and he sent me a useful article but before sending it i found this blog entry discussing this issue and i followed the instruction and here it comes the SP1 finally got installed :D happy me

this gives us a big message
1- never close a msg box without reading it.
2- search google for the error it might been occurred to others as will.

URL related to this subject
http://vaultofthoughts.net/VisualStudio2005ServicePack1.aspx

The magical fix :D
http://go.microsoft.com/fwlink/?LinkId=75605