True, I suppose the right card should be this one:
PC-STAPPENMOTOR-KAART
Artikelnr.: 967599 - 8F
79,95 EUR
However, this is weird, the same error is made on the Zoltar site... I hope the review above isn't written by the same person as is the site. (?)
Anyway, as you pointed out, the Conrad stepper motors appear to be no good. However the card is too week to drive stronger motors. So the card is no good either.
I suppose the "Zoltar Kit 800" card and motors are fit to work together, so I think this is the only valid option.
And finally, the PCNC software runs in DOS mode. Does DOS still work under WinXP?