WordPress Plugin Modifications

I need an experienced WordPress plugin writer to modify an existing newsletter plugin. Name will be given in PM. It already can handle HTML newsletters but you have to cut and paste the HTML into the content field. It needs to be changed to: 1. use the WP WYSIWYG editor for the content field 2. fix the preview so it shows what is being sent out (currently shows HTML code but the sent log shows the proper newsletter) 3. fix the sending (it sends but has spaces at the top of the email - same newsletter template sends properly from other tools) 4. load a newsletter from file to save them copying and pasting HTML code. Quote and PM me with references.