g1smd - 7:22 am on Jun 15, 2010 (gmt 0)
For multiple parameters, you need to "carry over" the back-reference from the first RewriteCond to the next RewriteCond otherwise the value is lost.
See the code beginning with the comment
# Redirect two-parameter-based index.php¦html? or / URL request in post 3752708 in the thread at [webmasterworld.com...] here.