updating sub-request parameters

[Daniela Floroiu <dani.floroiu@xxxxxxxxxxxxxx>]

hi,

I need to make an apache sub-request like:

    virtual('.../script.php?param1=val1&param2=val2...');

where the parameters are different from the parameters of the original
request.
I tried to set param1 and param2 in $_GET, $_REQUEST,
$_SERVER['QUERY_STRING'] but without success: what script.php receives are
nothing less and nothing more than the original parameters with the original
values.

any ideea how one could touch the parameters being passed to a sub-request?

cheers,
--df