strickly,
I am running Rob's B7 build and installed one of the several (there are like 3 or 4) SDHC cab files floating around. No need to mess with a kitchen if you are happy with the ROM you have (as I am). Here is a link to the cab file that works just fine:
http://forum.xda-developers.com/showthread.php?t=328330
The latest kitchen reduces the block transfer size for people who's music skips, (my music however plays just fine without this hack). If you want you can manually make that change here:
HKLM/drivers/sdcard/clientdrivers/class
Change the "BlockTransferSize" values of MMC_Class and SDMemory_Class to 20 (20 is hex)