Thanks all for the OS advice - I already own OS 8.5 CD + 8.6 upgrade CD so I think I'll keep my money & not purchase 9.1 CD on e-bay @ this point. As mentioned previously - this 2400 is currently in pieces & will receive upgrades; 240 MhZ card, 80 MB RAM, and possible HD upgrade. With these modifications will I still need to figure out how to activate cardbus via hardware mainboard modification? My main concern is to use my CF & SD adapter cards in the PCMCIA slots.