This may be off topic, but I'm not sure where to go - been to Gnome help and google - nada (wrong search?).

I have CentOS 5 on both my work and home machines, with Gnome 2.16.0 (default, straight out of the box, so to speak). At work I have two 17" FP monitors on an ATI FireGL V3400, at home I have one 19" CRT on an nVidia GeForce7100gs.

When I use alt-tab to switch windows at work, the border of the window that is the current target of the switch flashes black - this is fine. At home, the whole window goes black. I'd like to change this to flash just the border at home, but . . . how?

I've tried looking around for a setting for this and I can't find one, but I'm stabbing in the dark - even google doesn't give me anything, although the searches I've tried might have been off-base.

Any suggestions?