SciTech's Display Doctor (aka SDD) is just about the best-known utility for improving your graphics card's VESA mode offerings. Version 6.0 introduced, among other things, support for VESA 3.0. If you run games like (non-GL) Quake, this utility is an absolute must to get all those in-between screen modes. Believe it or not, your hardware can run faster with this software...
||Evaluation copy of SciTech Display Doctor 6.53 for Windows95. Check the Info link for more information on the changes.