Windows SBS 2003 Problems

Hello,
I just installed Nod on our SBS 2003 server and now when I login to the machine via RD, it wont draw the page properly so I can not even restart it. This means that I am going to have to pay someone at the datacenter to restart it. At the same time, I installed it on my desktop machine (I bought a 6 pack enterprise licence). With Nod running I can not connect via RD to another machine I have to administer. I've just read that you 'maybe' shouldn't run imon on server 2003 . Why isn't this information displayed in the installer? Why wasn't I told this information when I bought this product when specifically asked about this product suitability on 2003? If features of the scanner have to be disabled to work on a server for it not to break the server, why do I have to pay 'enterprise level' licensing fees for it?
Terry