[Ti] External Display Power

[Alex]

Hi All

I had a disturbing experience with my Ti at a meeting today.
I was giving a talk with two associates [ both PC users :-( ] they were 
using Powerpoint and I Keynote.
Happy to know that my presentation would be that much swisher I plugged 
in the DVI to VGA adapter and could not get the Ti to push a coherent 
signal to the projector!
I checked the leads (9m of high quality VGA lead) which both a Dell and 
a Gateway were using with no problems
I have used my Ti with projectors before and have had no problems, so I 
was wondering if anyone knew if the Ti's VGA signal, via the convertor 
is of a lesser power than a standard VGA signal from a port native the 
laptop?

Thanks for any feedback

Alex