Windows Vist 64-bit Is Not Display Properly

I'm in the process of building a PC, so I thought I'd try the ole Windows Vista 64-bit version for the machine. I've got for the machine, a Philips 22" 220CW8FB/05 LCD wide screen monitor, which has a nice display, really.As one does, I've calibrated said monitor and saved the settings, everything looked great. Experience tells me to be weary of what might happen, so I restarted the PC to see that my monitor's resolution and setting aren't displayed properly. The image is stretched vertically,the Start bar isn't even visible - until - I go Personalize > and adjust the resolution to something else, select No when asked if I'd like to keep it and hey presto, my monitor displays properly now. Problem is, I have to do that every single time I restart the machine. Currently, I've got just the drivers that come with my components CDs, I haven't been able to check on-line for other versions (but there isn't one for the monitor) for say the motherboard or graphics card, because in one of typically brilliant Windows moments™ (like when my mouse stopped working and it prompted me to "click here to fix the problem"), when I tried to install the -Vista compatible- modem, Vista said it wouldn't install it without a digital signature, and that I should go to the manufacturer's website for more information. I would. If I had a modem. So, in your humble opinion, which is the bigger waste of money currently? Vista or my monitor (twice as expensive as Vista)? Alternatively, any suggestions as to how I would be able to resolve the aforementioned conflict? I'd really like to keep both of them.PS. I guess it could also be a graphics card problem. It's French (not really, it's from Taiwan, an MSI NX8800GT).