By the way---
Your title calls about Slackware 13.1, while you run Fedora on VM, but your problem is all about "compiling the kernel" however netconfig did not do so you setup command: all in all, I do not exactly understand *how* and *where* to help you.
If you want to run Slackware you can download an iso image here
, burn and install: You don't need to compile the kernel, but you can play it later when you have at least one native Gnu/Linux running. Don't compile kernel running as virtual.
Next time please make things simple to understand. Good answers only come from good questions. So please ask the question with perspicuity and simplicity.