Dual boot is so simple a hampster coudl do it.
VISTA IS NOT THE PROBLEM. Christ, all everyoen does is blame Vista. BLAME YOURSELFS.
Its most likely your monitor, I also have an LG flatron wide 19" but it works perfectly. And you can see my system specs below. Im on Vista x86 and have few if any problems and ive used the OS for over 6 months.