>>IIRC, it produce incompatible results between different versions of >Windows. Or I'm mistaken?
>
>I have it setup for W2K server and W98 exchanging ciphered files and it is compatible.
>
>Could it be independent of IE strength since W2K server is at 128bit and W98 is not???

For one, Windows XP uses different Crypto Provider by default. See Re: Encryption Problem Message #655458.