upload file libary probelm

[eluser]Unknown[/eluser]
ok, i want to upload sis, sisx and thm files to my server...
And when i try to do that, i get error that the extension is not allowed.
on the allowed types i wrote:

Code:

$config['allowed_types'] = 'gif|jpg|png|txt|jar|jad|mp3|wma|wav|rar|zip|sis|sisx|swf|thm|THM|bmp';

and on the mimes types i wrote:

Code:

'sis'   =>  'application/vnd.symbian.install',
'thm'   =>  'application/vnd.eri.thm',

What should be the problem? thank you!