Sorry for another E90 thread

but we are currently trying out a couple of Nokia E90's.
We currently have a BES running with exchange and over 50 Blackberry Devices and the MDS works fine on them but when I try to run it on the E90 it comes up with a gateway error message. Now a couple of years ago I managed to get a xda running with BBC and it had access to the MDS. While the E90 runs BBC fine with emails and calender etc.... I cant seem to access the MDS. Any ideas or pointers would be appreciated.
One more thing is it possible to save attachments from your blackberry emails onto the E90's memory?
Thanks
Mic P