Two Questionmark, changing one to ampersand

Hey guys,

I try to get url rewrite work for my domain, but all of my trials fails, by now.

I want to rewrite http://www.domain.com/index.php?test.php?_escaped_fragment= to http://www.domain.com/index.php?test.php&_escaped_fragment=

Here comes my rule, that throws out an including error from index.php:

<rule name="Imported Rule 1" stopProcessing="true">
                <match url="^(.*)$" ignoreCase="false" />
                <conditions logicalGrouping="MatchAll">
                    <add input="{QUERY_STRING}" pattern="^([^?]*)\?(.*)\?(.*)$" ignoreCase="false" />
                </conditions>
                <action type="Rewrite" url="index.php?url=test.php&amp;{C:3}" appendQueryString="false" logRewrittenUrl="true" />
            </rule>

But index.php showing php error:

include(test.php?_escaped_fragment_=) [function.include]: failed to open stream: Operation not permitted in...

Can someone help me please, it is important.

Thanks a lot