I quote: "Loads the MSN Explorer Query Manager - a waste of resources and bandwidth. Also installed by the latest version of MSN Messenger. Note that disabling this can sometimes prevent internet sharing working on Win2K Pro SP2. Reports also suggest that removing it will re-enable internet access - hence the "users choice" recommendation. If you have problems leave it, otherwise I recommend you disable it".
Source:
http://www.pacs-portal.co.uk/startup_pages/startup
_full.htm
Cheers,
PD