For the problem with msconfig and since you told me the problem was after you unclick YAHOO MSG from starting on start up, lets try restore that on msconfig.
For the problem with windows update, please try this:
Step 1
Are you getting a specific error message?
If so, go here and check it
http://v5.windowsupd...t.aspx?ln=en-us
If there is no error, go to step 2
Step 2
Start >Run, type
regsvr32 jscript.dll
<enter>
Try Windows Update. If it is still not working, then try this:
Start >Run, type
regsvr32 MSXML3.dll
<enter>
Try Windows Update. If it is still not working then lets try this:
step 3
Download and install the following
Windows scripting host 5.6 for Windows XP and Windows 2000
Thanks