Hi, I think there is a little error, due to the Wiki interpretation of Caps words. In the section that describe the SVCPACK method to integrate hotfixes, there is mistake on the sample SVCPACK.INF file. on the forum you will see: ;Windows XP [Version] Signature=" NT$" MajorVersion=5 MinorVersion=1 BuildNumber=2600 The right syntax is: ;Windows XP [Version] Signature="$Windows NT$" MajorVersion=5 MinorVersion=1 BuildNumber=2600 If you enter in edit mode, you will see that the author have typed it right. Only wiki interpretation. This took me some times and reinstals, wondering why that hotfixes didnt install !