Could any one let me know how to deploy Microsoft Office Patch Updates using SMS 2003. How to Deploy the Critical Updates, Service Packs etc... using SMS for Office.

any Pre-Requisites ? any blogcasts ?

Please helup us with this...

You need this:

http://technet.microsoft.com/en-us/sms/bb676783.aspx

Inventory Tool for Microsoft Updates (ITMU)

Assuming that's the right link that I gave to you, it works like this:
-The server receives an advertisement for itself to go out and download the catalog of updates.
-An administrator right clicks on a collection and chooses "DIstribute software updates"
-The updates are chosen along with the options.
-The update(s) roll out to the selected clients.

HTH.  I know Brian has a webcast on this somewhere, check for ITMU.  Anything pertaining to ITMU is what you're looking for.

thank you