been away long time need some pointers

[ProxRocks]

for your intentions, you should be using your web browser's user agent settings and NOT Proxomitron...

only AFTER you learn some of the in's and out's with Proxomitron should you be trying something that "complex" via Proxomitron...

you are "spinning your wheels" trying to get Proxomitron to change your user agent when it's a THREE SECOND change in any modern web browser...