Thanks to some help from searching this forum and another awesome page (http://www.cyberciti.biz/faq/marvell-88w8335-chipset-netgear-wg311-pcicard-driver/), I've got wifi up and running on my TKL Drupal 6 box. However, one small problem remains, and this is when I reboot I get an error in the TKL console - Networking is not yet Configured. I can then use the console to initiate the network auto configuration and everything is good to go after that - I can access the installation remotely.
I'm now at the point where I need to take this machine off-site, so I need it to do the automatic network configuration, well, automatically.
Computer is Dell Dimension 4450/Intel P4. Wireless card is Netgear WG311 Marvell 88w8335 Rev 03. TKL Drupal 6 d/l yesteday from turnkeylinux.org.