I need to know if the following is possible and, if it's possible, which BT tool(s) should I use to perform that:

In a form with several fields that can be modified and some other that cannot be, is it possible to change this by...
- making a twin page?
- building a new packet?
- .... ???

Exemple with a field that can be modified:
<input name="txtTitle" type="text" value="Mr" id="txtTitle" style="width:80px;" />
Exemple with a field that cannot be modified:
<input name="txtAddress1" type="text" value="Backtrackstreet 55" id="txtAddress1" disabled="disabled" class="aspNetDisabled" style="width:248px;" />
Here's the "submit" button:
<input type="submit" name="btnOk" value="Ok" onclick="javascript:WebForm_DoPostBackWithOptions(new WebForm_PostBackOptions(&quot;btnOk&quot;, &quot;&quot;, true, &quot;&quot;, &quot;&quot;, false, false))" language="javascript" id="btnOk" class="button" style="width:56px;" />

For information, when looking in Sslstrip.log or in Wireshark after pressing "submit", only fields that can be modified appear clearly in the logs.

If you need more informations to answer, just ask.