DLL problems

Hi. I'm a big media buff and have all the regular players
on my system: Winamp, WMP9, RealOne and Quicktime. I play
files a lot and was doing so yesterday, as usual. After a
while, I switched Winamp off. I closed the computer and
all was well.

The next time I switched it on, I played music and typed
for a bit, then suddenly my computer went on a blue
screen crash and restarted everything. That happens to me
once in a while (I've had the comp for a year and a half
and maybe it's happened 5 times), but normally after the
automatic CheckDisk at reboot, all is well. Not so this
time. CheckDisk found a ton of files crosslinked and it
did whatever it does to fix them. Now, however, it seems
that my DLL files are on the fritz. WMP now refuses to
play my MPEG-2 files, spitting out audio with no video.
Winamp3 refuses to load, mentioning missing DLL files. I
reinstalled DDRAW.dll because it asked to, but now the
error I get when I try to load ANYTHING on ANY media
player is: "The procedure entry point
MakeCriticalSectionGlobal could not be located in the
dynamic link library KERNEL32.dll"

Is there any way to fix this, please? I really need help
here. Thank you!