Shopping Cart approval process in SRM using Black Berry

Hi,

I am very new to SRM. Here the user wants the whole approval/rejection process of shopping cart should be done via the Black Berry.

When a shopping cart is created in SRM then automatically a mail should appear in this mail box(outlook or lotus) as well as in the black berry mail box, so from black berry the user will accept/reject the shopping cart.

What workflow should be used? for mailing to outlook as well as in the blackberry whether we should implement any BAdI and also for integrating SRM & black berry whether we require any plug-in or configuration to be done..

Please do the needful..

Thanks and Regards,

Chandra Sekhar