Thanks once again vyankey. Success (thanks to a post by a member "flyfishin".)
For benefit of newbies:
1.Boot from newly compiled kernel.
1.D/l (or find it in cd4 or5) alsa-driver folder ( 1.0.11 source) from ftp://dl.xs4all.nl/pub/mirror/slackw...11.0/source/l/
(thanks to Bruno from scotfinnie forums) to /home (no need to compile alsa-utils, alsa-oss, etc.).
2.cd to above directory.Untar the bz2 file.(tar xvjf alsa-driver-1.0.11.tar.bz2)
3.At the command line type: sh alsa-driver.SlackBuild
4.Step 3 creates a new alsa-driver....tgz file in /tmp. Go to /tmp and do an upgradepkg --reinstall alsa-driver...tgz