Here's whatsnew:

Captain CPS-X readded netplay and removed the dependancy on any external dlls - use them at your own risk
Fixed a problem with the SuperScale filter on nVidia gfx cards
Merged in Captain CPS-X's improvements to the game selection dialog
Fixed a problem with the game information dialog displaying incorrect images
Updated the romcenter dat module to support the latest romcenter
Imported fixes from MAME 0.126u4 for fm.c
Added a flag for MVS Cartidges and changed hardware description output
Matched all sets to MAME 0.126u4

Get it here:
http://www.barryharris.me.uk/article_view.php?id=116

-Trebor