2.2 froyo - Syncing tasks with exchange server

I've recently upgraded from a Windows Mobile 6.1 phone to a desire, and there is one feature that I miss and that's the ability to sync tasks with my exchange server. What are other people's, low cost solutions to this problem?

Answer

I've used Nitrodesk's TouchDown for that. It does the full Exchange experience. Not free, but not too horrible. I really liked it -- but ultimately uninstalled it as my current android phone is a little gimpy on processor power...