Hiding link conditionals & php variables so the URL remains hidden

[yoyoyoyo]

What is the best way to hide a link conditional by its url or to pass php variables through the URL so the actual destination URL remains hidden?

for instance, if I was using erwin's Instant Txt/Html/Java File Forum Integration hack how would I hide the part after the "html.php?="

for example:

http://www.your-forums/forums/html.php?file=xxx.html&title=Your Title