IE Error with Images showing??Makes no sense

Im truthfully boggled.

FireFox 1.5 +Good+
http://www.jream.com/err.jpg

IE 6 -Bad-
http://www.jream.com/err2.jpg

Why would it do this?
I've cleared cache, cookies, history, everything.

Even a lot of images aren't displaying, on IE but they do on FF.
I renamed a few files and changed all the settings, thats all I did..

I view the source and hmm, it should work, the images are linked right.
http://www.lostseed.com/images/nav_audio_t.gif
http://www.lostseed.com/images/nav_audio_t.gif (theres the image, but its transparent)

http://www.lostseed.com/images/nav_audio.gif
http://www.lostseed.com/images/nav_audio.gif (Theres the hover)

http://www.lostseed.com/contact/index.php
(To see what i mean )

Both those images throw up a 403 for me.