Quote:

Are you saying that I should CD into the jabber directory before I execute the command?




Yes, you also need to change the logged drive to the correct one, as Les mentioned earlier.

Borrowing the DOCs code:
Code:

GO C:
CD '\Program Files\jabbertooldir'
If @ERROR
'Cannot CD to jabber dir ['+@ERROR+'] '+@SERROR+@CRLF
Else
SHELL 'jabber.exe'
If @ERROR
'Error executing jabber ['+@ERROR+'] '+@SERROR+@CRLF
EndIf
EndIf

'Please press any key to continue...'
GET $



You could also try running it under the command interpreter - not normally required, but you never know:
Code:
SHELL '"%COMSPEC%" /C jabber.exe'



Once you are happy it is working you can change the SHELL back to RUN.