@Roman,
Okay, here is the link to
Amiga Forever, which you can order online the great program Amiga Forever 2005 in either an online download edition or the full edition that includes one CD-ROM and two DVD's of historical content like the original launch of the Amiga, interviews of Jay Miner, the father of the Amiga, etc. Info regarding the
Catweasel Mk4 that can be bought from many resellers like AmigaKit, Software Hut and probably many others.
I have this setup on my son's recently built PC and it works absolutely great. I cannot say enough about it praises and I am very glad to know that when that last Real Classic Amiga finally dies (many years from now) due to a custom chip failure that cannot be replaced because they are finally all gone, the Amiga will live on very well in emulation for generations to come.
(P III/800mHz is what I would consider a minimum config, faster w/ more RAM is always better for emulation)