Are you working with Windows Server 2003? Maybe you have noticed that Stored User Names and Passwords control panel applet:
net use /user:. I wish Microsoft would have included it in XP already.
But wait... Maybe we can use that applet on Windows XP as well. In fact, the control panel applet's executable is
%SystemRoot%\System32\keymgr.cpl. So if you have access to a Windows Server 2003 installation, just copy that file to your Windows XP box and open your control panel. Viola.