WMV<->MPEG2 conversion

[reachb4]

Hello,
Can any 1 pls tell me how to convert WMV to MPEG2 using graphedit so that i can use it with direct show to do the conversion job. Cud someone please tell me where can i find the encoder codec for mpeg2.

Any link to web resource will be also helpful.

Thanks in advance!
John.