I'm not surprised.
Most new computers do *not* come with serial ports.
I would suggest getting a USB to serial converter. I've been extremely happy with the converters that are based on FTDI's chips -- their drivers are certified, and work well.
Based on the link you posted, which I was think was Finnish, I'm sure you have some different local suppliers than in the US. I'm sure we could find a local source for one if you have trouble.
Good luck.
I don't mean brand new computer. I mean not so old Windows XP computer that has serial port. I had pentium 3 xp computer that had serial, but I was just too stupid and I threw it out.

My Win98 computer doesn't even have USB ports :hammer:
I think I'll get an old XP computer more cheaply than USB to Serial converter.
But thanks for answer.
BTW: Theres a Belkin's converter (in same site, where I bought cable):
http://www.verkkokauppa.com/fi/product/14777/qjgc but it's quite expensive, when my Amiga 500 pack with external FDD, PSU, mouse and 1MB ram cost only 22€.
-Eemil