Thanks for the reply, Mark.

The solution seems to be to enter 'Knoppix screen=800x600 xvrefresh=85'
[Without quotes] at the boot prompt.

I should have read the documentation more, I guess. I found this when I pressed 'F2' [Cheats] while the Knoppix screen is displayed for the first time while booting.

I hope I didn't cause any inconvenience.

Aravind S