Computer info

My computer is a Fujitsu Siemens Scaleo T.
I need to upgrade my graphics card, and AMD have asked me to supply them with some information about my computer, but I’m clueless as to where I find the info.
They asked how many watts the power supply in my system is & is the motherboard AGP slot 2X, 4X or 8X?
How do I find out this information?