First of all, I wanna say hi to all of this community's members, since this is my first post.
I have installed Backtrack 4 recently and I can't set the resolution higher than 800x600. In resolution tray this is my highest one. If I tray to set any resolution bigger than 800x600 with xrandr it says "Size 1440x900 not found in avalable modes" and so on.
I have a GeForce 8600 GT video board and I run Backtrack from VirtualBOX under Ubuntu 9.10.
If you have a solution please let me know