Rod

I am attempting to upload my Resume to several different job sites but I continue to get this error message :
Your document did not have a ‘.doc’ extension, please use a .doc file.”
I originally set up my resume in MS Works(Word Processor)and I could not upload from there so I downloaded free trial of MS Office 2007. I copy/pasted resume from MS Works to MS Word 2007 and I still received same error message above. I would pull my hair out but I do not have any. PLease HELP!!!!