nope but u can set hotmail to bring in mail from the other account that u want in Exchange then u can set it to sync in the "manage folders " option might not be exactly what u want but its a good workaround till wp7 arrives on CDMA carriers.
Yea, it blows, but no. Others have pushed one to Google apps, and then back to the phone. I never went that far but it's another option. Last I looked there was a bork and you couldn't do tasks