Video Card for 75 foot cable run

[Mark C. Miller]

I'm a high school [U.S.] English teacher who received a ceiling-mounted 
video projector for my classroom over the summer.  The cable run from my 
desktop to the video projector is about 50 feet [15.24 meters]. Last 
year, I used a cart-mounted projector and a 100 foot [30 meters] long vga 
cable (Didn't need that much but it was the next size up from the 10 
footers the school had).  My old Gateway laptop would not "drive" the 
video projector.  When I connected to the cable to the desktop (a Dell), 
I had no problems.

Due to the way they installed the thing, I will have to run a vga cable 
across my desk to get to the connectors for the video projector.  I'd 
like to avoid that.

My question is, how or what do I take into account on a video card to 
determine ahead of time that it has the needed capacity?  I thought of a 
new Netbook, but I'm just assuming that the video card will be 
insufficient.  

I'm running Ubuntu 9.04 (Shh.  Don't tell the school; they think I'm 
using Windows).  I won't have access to my school computer for a couple 
more days, so I can't tell you what the video card I've been using is.  
It is "builtin" -- if that is the term -- to the motherboard.

Thanks in advance your help.

mcm



-- 
Mark C. Miller