directshow aac decoder and encoder filter

I need directshow aac decoder and encoder filter, they must work on DES. The encoder filter need have some interface that allow set the bitrate, audio channel, audio sample rate. I do not need UI property page. you need provide a sample to me how to use these filters. you need use vc++ 6.0 or 7.0 to writer these filters. ## Deliverables it support win xp and vista.