Mmm... I'm not sure but if you have access to your virtual hosts config file you might be able to modify the upload_max_filesize from there.
What I do is setup an SFTP or SSH account to transfer files safely. Then, with a Web interfase I assign and relocate the files where they belong. I like this method better because it allows me to do batch uploads and I believe it is faster than HTTP upload. Sure, you can't check the validity of file types before upload, but I wrote a "filtering" program that checks for new files and erases the ones that don't belong there.
Just give it a try anyway. BUT donīt say I didnīt warn you that it probably wonīt work. set all you want, just donīt expect it to work. code anything you want, but donīt expect it to work. Is that the official PHP motto?