Windows XP SP2 Firewall

[Dock]

I have installed SP2 on a Windows XP Home machine, but am unable to
turn the firewall on. When I try to run it from the security window,
it says it cannot turn on Internet Connection Sharing. When I run
SERVICES.MSC, and try to turn the Windows Firewall/Internet Connection
Sharing on, I get the following error message:

Error 123: The file name, directory name or volume label syntax is
incorrect.

In looking at the "Path to executable:" window, sure enough, it says:

\SystemRoot\C:\WINNT\System32\svchost.exe -k netsvcs

which is exactly what it should say, except for the \SystemRoot\
entry, which I assume is what is causing the firewall not to start.
Unfortunately, I can find no way to edit that window to take out the
offending entry. Anyone know how to correct this problem? Thanks.

 

[bonannogiovanni]

You only need to find that path with regedit in the registry and
correct it deleting the "\systemroot\" in every single key you find it

 

[Guest]

Don't follow the advice below, rather change all of those \SystemRoot\
entries to %Systemroot%\

otherwise you'll end up with error 3: The system cannot find path specified

Hope that helps. I know that hint below was enough to get me on the right
track.