Does anybody know if it is possible to use either the treo 700w or the 6700 to connect to multiple exchange server accounts? Or any other device that will do it?

 

You could possibly run pop on the Exchange server, create two mailbox accounts and then use two different accounts on the device (or even two different mail programs). To my knowledge, you can not have two accounts on one device using Blackberry Enterprise Server or Exchange Mobile with Active Sync.