I totally rebuilt my Acer Aspire 3500 laptop. I wiped out Windows XP Home Edition and installed Windows XP Pro SP2. When I brought it for a presentation last month, I couldn’t redirect the video signal to an external projector or monitor at Microsoft’s office.
It turned out that my laptop uses a separate program to do that. I wouldn’t be surprised if other Acer models are the same. Anyway, if you’ve rebuilt your Acer machine and need to redirect the video to an external monitor, you need to have eManager installed. Get it from Acer’s support site and run it to direct video to the external source.