Where to get OID for Windows 2003/2008 to use with check_snm

Hi,
where do i get the oid to monitor cpu, disk, memory for windows server 2003/2008.
Or how do i get it? is there any tool for windows to get oid?

so far i have only got one which gives System Uptime
./check_snmp -H 172.20.10.10 -o .1.3.6.1.2.1.1.3.0 -C public

you help will be appreciated.

use check_nt and ntclient++ on windows server.