thanks for the info.
I've now worked around around my problem getting to webmail by logging in first, then jumping straight to the squirrel mail page (e.g.
http://webmail.mysite.com/squirrelmail/src/webmail.php). This works in Firefox, but not IE (because IE is not remembering the login for whatever reason).
However, i shall certainly bare PHProxy in mind if i find that there are other
website hostings that i want to access, around a firewall.
Cheers!
Chris