Try this one out, it's little more user friendly, I think: http://newton.pbk-solutions.de/ncu_nbu/slowdown.htm

This may seem obvious, but there are settings in the tactical section that let you slow down the scroll speed and animation speed. It took me a while before I noticed them.

I think i there is a XP fix somewere. That will allow you to run them perfectly under windows XP with correct speed and no problems, i'll look for it :)

If you're still having problems, you might want to look at some of the solutions for UFO here:
http://www.xcomufo.com/x1faq.html

will do, sometime..

I have UFO iso which works great in DOSBox (it's not 'fixed' like one in download section).

It might help people who are running Me or fast computers.

How big is the size?

No problems here on XP SP1, runs like a charm straight from the zip. :)

25Mb with documentation in PDF, adobe (DOS and Win Version), install and floppy.

I can install game on my PC and create zip of it.

Also, PDF is about 5Mb. Care to upload it to abandonia?

Sure, why not? Just don't forget to zip the .pdf manual too. ;)