Originally Posted by franplumm
i havnt! i have windows xp!
OS stands for 'Operating System', which is what Windoes XP is... your computer won't run at all without one!
The alternative is Ubuntu, which is a Linux based system, and which has a good following on here also.
... and of course a lot of Mini 10v owners has turned theirs into a 'Mac'... but that's another story altogether.
None of the above of course help with your initial question, but this isn't usually a problem under Windows as most programs automatically adjust the visible size of their display to fit the screen resolution available... you haven't by any chance changed your default screen resolution have you?