One option is to use loadlin to startup. It requires some boot images from the distribution you are using, and...ah ok im too lazy so here:
http://www.slackware.org/faq/do_faq....q=installation
Look for installation without a floppy and the howto install from an iso file without a cd.
I use that option on my portege 3440CT, but its a lot of trouble and took me a whole day =(
Another much more nice solution would be the one writen here:
http://lenz.homelinux.org/portege3440CT/
The page is down right now, but google may have it cached (Try "portege 3440CT linux" as a search). It just requires your laptop to be able to boot from the network device and ofcourse a linux server.