How to enlarge the media file upload size in wordpress admin

I’m using wordpress 3.0 with buddypress.

I need to enlarge the file size that is being uploaded from the media section in the admin menu.

We have tried many ways including the methods from this link but nothing made it larger than a 1 mega.

Is there a different way to do it?
Thanks

If you are using multisite make sure you set “Max upload file size” to some higher limit.

Network Admin -> Settings -> Network settings -> Upload settings ->
Max upload file size