Have you tried using just the PCMCIA disk? As I recall, the PCMCIA network device drivers are on the PCMCIA disk, and not the network disk as you would assume. Or at least, it was the last time I used them.
Also, I have a seperate, generic network boot disk that works fine and I was wondering if there was a way I could just map the drive to the slack 11 dvd and install it straight from there (without the slack bootdisks).
Not sure what you mean by this. What does this boot disk load up to? If it loads up to some sort of network-capable Linux system, and you have enough space, you can copy the entire Slackware package tree from the CD onto the HDD, boot with just the first 2 Slackware boot floppies, and install that way. The installer will give you the option to install the packages from a local file system.