How do I copy the printer driver from one server to another? By the way, they both Windows 2008 R2 Standard.

But I just need one printer driver instead of migrating the whole printer server.

You can select what to migrate.

Will the IP address associated to the printer be migrated too? I don't what that happen.

No it won't. Please read http://technet.microsoft.com/en-us/library/cc722360.aspx#BKMK_winui ->simply open printmanagement.msc

I exported the printers from 2003 Rs 64bit server and the server I will need to import to is 2003 R2 32bit. ( sorry, two servers are not exactly the same). I didn't see there is a choice to import on this 2003 r2 32bit server.

Ok, try it this way: open printmanagement.msc on 2003 Rs 64. Export. From there, connect to 2003 R2 32 and select import - what happens?

Found a way to work around it.  Here is the link:
http://social.technet.microsoft.com/Forums/windowsserver/en-US/92d5e028-34fe-4623-9d9a-31b8b820f043/installing-x64-additional-drivers-for-shared-x86-print-server-on-2003-server-x86-sp2-help?forum=winserverprint

Thanks a lot!

Ok, that old problem, different architectures :) Fine.