Order/changing of subkeys derogates compatibility!?

[gnupgpack]

Hello,

> 6.5.8 is about sixteen years old now and has many known security
> problems.  Please stop using it.
(Yes, intended only for testing...)

> - From (possibly inaccurate) memory, PGP was up to somewhere around
> version 8.x before it supported signing subkeys.

First PGP version supporting WinXp has been PGP-8.x AFAIK.
So I will test (yes, only testing...) new key compatibility with this still
common spreaded version. 

But where to get old freeware version PGP-8.03/PGP-8.1 (release in
Oct-2003)?

Sym at ntec's freeware page seems to be redirected to shop:
http://www.pgp.com/products/freeware.html 

PGP-version history up to v10:
http://www.mccune.cc/PGPnew.txt 

Thanks + regrads, Chris