Excel 2007 : Excel compatibility issues from 07-03

Hello

firstly I've searched thru the forums and nothing has helped.

I create/manage our budgets. I've recently upgraded to 07 and find that its a much improved product over 03.

I've created the budgets in 07 this year, exactly the same way that I've created and maintained our previous budgets.

All others bar one that need access to the file are working in 03. They've all downloaded the latest compatibility file. however when they open my file it states that there are too many formated cells and then procedes to take all the formatting out and a bunch of different sheets.

Ok..thats not working....so next step...

I've then saved the file in 03 format instead. Well this time all formating disappears. Ok, ok....on the same file, i change all the formats again and save it...still in 03 format. Close out..reopen....DAG NAB IT...all formatting has gone!!!

I've done a compatibility checker...it originially stated there was going to be a minor loss of fidelity. *5. I removed the only thing that I can see's in their 5 times (an american flag, we're an international company) Now it says there are no compatibility issues....yet still...the same happens.

This is driving me crazy. I've worked on this spreadsheet for a month str8!

Does anyone have any advice??? Please help, otherwise my boss is going to force me to change back to 03...which i really don't want to do.

thanks.

matt