css and swfobject 2 conversion for IE6

I have an existing site that needs secondary css optimisation for ie6. There are 2 templates and one generic file. One of the templates has 6 variations making 9 css files in total. Fixing one template will mean the changes can be cascaded to the variations. The optimisation for these is straightforward box model stuff. The second template uses transparent pngs in a somewhat complex way that allows the cms users to alter images. An ie6 alternative (not [login to view URL] opr related ie6 hack) will be required. Unchanged parts of the ie6 css files need to be removed. (give those ie6 users a minor bandwidth break ) Lastly, the site utlises swfobject 2.0 which requires fixing. The work needs to be complete by 14/09/2008