Please help Exchange mail on Froyo?

[Guest mt6622]

I am watching the development of Froyo and have been using roms on my HTC desire, is there a way to so that Exchange email will work the same as on 2.1 ROMs as from my research to work on Froyo my IT department at work need to change some IIS 7 settings on the server for Froyo to receive emails which they wont do for me, frustrating when 2.1 ROMs work seemlessly with Exchange mail. i have tried to install HTC Mail app on Froyo without luck, Appreciate your help