Blackberry and Domino?

["Roger Vicker, CCP" <rv-tech@xxxxxxxxxx>]

I have a CFO and and a COO that are looking at getting Blackberries and 
they want to be able to:
1) Access their email at any time and place via the cell network
2) Access their office desktops at any time and place via the cell network

The only server in house is the IBM i and it is running Domino 8.1 and 
the Apache web server with plugin for Domino. All Domino users are using 
either the Notes client or DWA.

I thought I had read in the lists that you had to have a Blackberry 
server in order for them to access their Domino mail. However the  cell 
rep is saying all they have to do is load a free piece of software on 
any PC.

Is the above true?

How about security if the above is true?

Is there any secure way for them to take remote control of their office 
desktop when there is no Wintell server present?

Thanks.

Roger Vicker, CCP