
I've already mentioned this topic in some detail to Smeagol, Enok and Armand, but basically the situation is the following: My father does not buy new computers very often: His first computer - a high-end personal computer at that time - was a heavily loaded Macintosh Plus in 1986. Later, he got a Macintosh Performa 460 around '95 and just yesterday, he finally bought a MacBook Pro. Picking up the computer was a story in itself but I'll spare you - it was sweaty business

The described 10 year gaps between changing computers sound completely amazing to me. For instance, I got a full five years out of my previous computer (a PII 400mhz), but it was an excellently timed purchase and I ended up upgrading everything but the motherboard and the processor anyway. Migrating to a new computer was a piece of cake, too.
But what about my pa? His old computer, the Performa 460 and the new one, the MacBook Pro carry none of the ports the other one does. They are 101% incompatible, including the operating system, applications, ports, data storage, everything.
Still, files need be transferred - what to do? CD-ROMs? Fine otherwise, but we only have a 2x SCSI CD-ROM reader that was acquired early on... no burnin' on that. Try finding a cheap SCSI burner at this juncture (let alone buying that junk for just one use)! LAN? Daym, the older machine supports AppleTalk/LocalTalk instead of Ethernet and there's none of those supported in the MacBook anyway. Serial won't do, either, since neither carries one.
...floppies? Doable, but... who wants to transfer 600mb on floppies?
So the wildest plan that sounds like it could materialize I could devise - something that I've in fact wanted to do before - is hooking up the Performa's old 500mb external SCSI Seagate drive I bought from the UK to my PC. This is possible because I have an SCSI card that I acquired earlier for this very purpose.
But that's not all. As you guys know, there are four SCSI standards (SCSI-1, SCSI-2, SCSI-3 and Ultra-SCSI), several types of connectors and cables for each. Luckily they are all backwards-compatible, so that is not a problem in itself, but the connectors are. The good thing is, I finally discovered the right type of connector (after a gruelling scavenge for information, I might add) to stand between the HD, its original cabling and my old Ultra-SCSI card.
Such adapters (HD-50M to Centronics 50F) are very limited on the market, but luckily I was able to find a webstore that carries them for quite a fair price. After a shipping/payment mess I should be receiving my adapter next week. I'll keep you posted!