changing video resolution from command line

[Archangelus]

I'm running Umbuntu in virtualbox, and I've managed to screw up my video settings. I've tried to install the drivers for my 8800 card in the virtual machine, not realising that within the vm I can only use the default vesa compatible driver, so now all I get is a garbled screen.

I can get into safe mode booting, but this just drops me to a command prompt, and I don't know how to reset the graphics settings to a usable one from there.

Any ideas, or is it a case of reinstalling it again?

Thanks in advance

 

[Archangelus]

Thank you kindly, did the trick nicely