jquery, uploadify and jquery conflict version

Can anyone help me on this ?

I'm very beginner with jquery, ajax etc... all javascript process in Drupal. I try to create a simple module to upload files with the "uploadify" library (http://www.uploadify.com/demos/). I have a problem with jquery versions conflict.

If I understand, D6 use jquery1.2.6. Unfortunately Uploadify use jquery.1.4.2. I tried the solution described on http://drupal.org/node/578712, but it seems there is a problem with the trick and uploadify.

I load new jquery version and the uploadify library, after I load the jquery-noconflict.js and finally I load the js of my module, using jQuery14 as alias of the new jquery version. I go to /upload and can select files, but when I valid the selection, nothing happend.
If I comment the import of the jquery-noconflict.js and change jQuery14 to jQuery, all happend successfully, I can load multiple files on my page. But in this case, all access to jQuery1.2.6 are broken...

I join my module, to put into /sites/all/modules (because there is static links in watcho_uploadify.js)

Thanks in advance for suggestions.

EDIT : oups... link to download the module : http://www.sabugo.ch/temp/watcho_uploadify.zip