I have this .cmd file I got from a forum that fixes some issues I have.

%windir%\system32\net.exe stop bits
%windir%\system32\net.exe stop wuauserv
%windir%\system32\regsvr32.exe %windir%\system32\atl.dll
%windir%\system32\regsvr32.exe %windir%\system32\jscript.dll
%windir%\system32\regsvr32.exe %windir%\system32\msxml3.dll
%windir%\system32\regsvr32.exe %windir%\system32\softpub.dll
%windir%\system32\regsvr32.exe %windir%\system32\wuapi.dll
%windir%\system32\regsvr32.exe %windir%\system32\wuaueng.dll
%windir%\system32\regsvr32.exe %windir%\system32\wuaueng1.dll
%windir%\system32\regsvr32.exe %windir%\system32\wucltui.dll
%windir%\system32\regsvr32.exe %windir%\system32\wups.dll
%windir%\system32\regsvr32.exe %windir%\system32\wuweb.dll
%windir%\system32\net.exe start bits
%windir%\system32\net.exe start wuauserv

I downloaded this to fix problems using Microsoft Update. Everytime I boot to Windows I have to use this file, if not, I will have problems using Microsoft Update (Microsoft Update page "lag," every single thing it needs to load makes IE hang, and shows this error: "Files required to use Windows Update are no longer registered or installed on your computer.")
Aside from that, the Add/Remove Programs does not work properly. Instead of showing"Please wait while the list is being populated.", it hangs for a moment without showing that message. (Loading the page usually takes longer than when it loads with the message.)

Well, these are the symptoms I encounter if I do not run the .cmd file. Any idea why I have to run it everytime I turn on my computer and log to Windows XP Media Center SP3?

Thanks in advance!