No no, it's a 44pin PATA interface that's used, so it's unfortunately not as easy as getting a SATA drive.

However the chipset seems able to use SATA (and PATA). The 40gig Hitachi that I'm trying to replace is a ATA-6 PATA-drive. Wish Dell would have used the SATA interface instead...
I've found an old Dell D600 at work that I'll try the Samsung drive in (the D600 has the same 40 gig Hitachi as my I6000).