JamboUK, download the current nvidia linux drivers from the nvidia website, unpack the package, and amongst other stuff you will see various readme's. Take your time to read them all (!) and you will see.
In particular, you will see what the entries are for in the fstab and the xorg.conf. I know those readme's are very long, but you will find exactly what you are looking for. (In Linux and BSD, the readme's are actually meant to be read!)
I had the same problem years ago. If the monitor was OK in WindBlows, it was shifted horizontally with Linux. If it was OK in Linux, it was shifted with Windsblow, and so on. The only solution was to set it correct in Win-Doze, and then to modify the setting in Linux. Personally, I blew the winds into the rubbish bin many years ago, and haven't missed any winds ever since. So I don't really remember which setting it was. But it definitely does say so in the nvidia readme's. (I think it was in the bottom quarter of the longest readme, perhaps in appendix K, or rather appendix G...??? )
Last edited by Helmut_K; 05-19-2006 at 03:59 AM.