Mine's all better - I copied the steps here for you to use -- they worked:
Step 1: Download Microsoft Windows Installer CleanUp utility
============================================
1. Visit:
http://download.microsoft.com/download/E/9/D/E9D80355-7AB4-45B8-80E8-983A48D5E1BD/msicuu2.exe
2. Save the file to your Desktop
3. Please double click the file msicuu2.exe on the Desktop to install this
tool on your computer.
Step 2: Remove .NET Framework 1.1
========================
1. Click Start -> (All) Programs->Windows Installer Clean Up.
2. See if you can find .NET Framework software. If so, remove it.
3. Restart the computer and see if the issue still exists.
For more information, please refer to:
-----------
Title: Description of the Windows Installer CleanUp Utility
Link:
http://support.microsoft.com/default.aspx?scid=kb;en-us;290301
However, if any problem is encountered when trying to uninstall .NET
Framework 1.1, we can also refer to the following Knowledge Base article to
uninstall it manually.
http://support.microsoft.com/?id=320112
After that, please restart the computer and perform the following
suggestions to reinstall .NET Framework 1.1 and the updates for it.
Step 3: Install .NET Framework 1.1 Redistributable Package and .NET
Framework 1.1 SP1
=================================================================
1. Please download the Microsoft .NET Framework Version 1.1 Redistributable
Package and the updates from the following link and save them to the C drive
(C:\)
Microsoft .NET Framework Version 1.1 Redistributable Package
http://download.microsoft.com/download/a/a/c/aac39226-8825-44ce-90e3-bf8203e74006/dotnetfx.exe
Microsoft .NET Framework 1.1 Service Pack 1
http://download.microsoft.com/downl...-bdb8-c4e00af5b94b/NDP1.1sp1-KB867460-X86.exe
Security Update for Microsoft .NET Framework, Version 1.1 Service Pack 1
(KB928366)
http://www.download.windowsupdate.c..._20112ef50011e0de2c0e3378139245d81a178b15.exe
2. When the File Download window appears, please click the Save button, and
follow the directions to save it to Windows. After downloading the Microsoft
.NET Framework 1.1 setup file onto your computer, please double-click the
.NET Framework files to manually install them one by one.
If an error is encountered when installing .NET Framework 1.1, we can also
refer to the following Microsoft Knowledge Base article to troubleshoot this
issue:
How to troubleshoot Microsoft .NET Framework 1.1 installation issues
http://support.microsoft.com/?id=824643