Heres the way to get it all working right in RC1.
Do not uninstall the drivers included with RC1.
Also do not install the LW3 that is for win2k.
Instead grab the liveware 5.1 for win2k files off creatives site.
Its around 17Mb. These were designed to work with the newer
Emu10K1M.sys file version 3300. These versions of the Emu file have solved alot of problem for people in win2k with crackling, lockups, etc and also work in SMP.
Once you have the liveware 5.1 then extract the files and run the files like this , example if you installed them to C:\sblive
Go to start , run, then type C:\sblive\SBL51.exe /w
The /w at the end tells it not to check which version card is installed.
When it is installing, you will get a pop-up saying the WDM drivers are not certified, etc. Click STOP installation. This will prevent the RC1 drivers from being overwritten. Then just let it finish and it all should be working. Nothing else needs to be done.
I've tried this with RC1 on the very first sblive value and it works great. All features working and you don't need to change any of the drivers installed.