go to creative labs website... download sbbasic.exe
reboot and hit f8 just as you see "starting windows 98"
select "command prompt only"
install the drivers
reboot and it should be good... diagnose.exe is included, so you can test it too
500MB or 500GB of ram, doesn't matter... DOS is a different beast in how it manages memory... you only have 640KB to work with for many things (in fact, once you get below 590KB of free conventional memory, you run into problems running DOS programs), and then up to the 1MB ceiling for the high memory area.. many drivers allow you to be loaded into high memory, and the creative drivers are no exception... you will need himem.sys and emm386.exe loaded to do this
your config.sys should have the first two lines:
DEVICE=C:\DOS\HIMEM.SYS
DEVICE=C:\DOS\EMM386.EXE NOEMS
then the rest can usually be DEVICEHIGH=
and in autoexec.bat, you can do "loadhigh" (shortform is "LH") for many TSRs
I'm obviously simplifying things, so I suggest you go google and read up about DOS memory management
himem.sys and emm386.exe will probably be in your windows directory somewhere since you now run 98 instead of DOS 6.22... so make sure what you put in config.sys reflects this
if your SB16 is PnP, things might be a little more tricky... I don't have much experience with the sound blaster PnP cards in DOS (most of what I own have real jumpers), so someone else can probably help you better with that