Hi,
Here is how you fix your code 1601 in MSN Messenger.

Goto Start – Control Panel

Performance and Maintenace

Administrative Tools

SERVICES

NOW in this Profile Scroll down till you see

Windows Installer

Right click on this and go to Properties

In Start up type MAKE SURE IT IS IN AUTOMATIC

THEN in SERVICE STATUS
Hit START
Makes sure it is running before you leave, CLICK apply and close all windows
Now go to msn.com
and on the bottom you will see MSN Messenger follow the directions from there.

Have Fun Kids
Doctorjanitor