Problem in file upload

[eluser]Techno Heart[/eluser]
Hi all,
I am using file upload class in my project. All extensions working fine in fire fox but its not uploading .doc ,.xls and all MS document format, am trying to upload a open office file not micro soft word file. Its accepting Zip file. Any one know whats the problem. ?

[eluser]vitoco[/eluser]
check the mime types in the application/config/mimes.php file, then find the proper extension and compare the mime that you get in the upload with the list. if it's not there.. add it.

Saludos