I installed Slackware using the test26.s kernel found on the CD, followed up by installing the alsa-driver, kernel-modules, and kernel-source for 2.6.13 found on the second installation disc. Recently I tried to recompile my kernel for SMP and HIGHMEM following shilo's guide, but I obviously did something wrong. Ended up not being able to boot the new image, and messing up the other's modules in the process.
So apparently the kernel is still too advanced for me. However, it's irritating that I have a dual-core Opteron and 2GB of RAM that aren't being utilized. Does anyone know if the kernels found in -current have SMP and HIGHMEM enabled? And if so, how would one go about installing them on a running system?