Just use the newest (it's 261.00 or 262.99 for the beta and 260.99 for the WHQL's) and follow the menu's options, I always choose "Custom" and then tick the box marked "Perform Clean Install".
I am running window xp with 32 bit.
I have installed nvidia driver 260.99 without installing earlier version 260.89 for GTS 450 graphic card.
Is there any need to update driver previous version when installing latest version.
In my driver CD the version was of 259 series.