tried every single way I found on the Internet but no success. The only way
I got something was using Ubuntu, removing the cables from my HDDs and
turning the pen drive into a removable HDD. It worked. Could start and use
ubuntu from a different computer then the one I've used to install it.

Is there a tip or something different to try? I just followed lot's and
lot's of instruction from http://www.pendrivelinux.com/ but got nothing.
I've tried to install it within windows, from a bunch of distros's with Live
CDs, with unetbootin using previus downloaded ISOs and downloading within
it...

I just don't know what else to do.

If Ubuntu worked fine, other distros should work as fine as it did.

The pen drive is working flawless and the partitioning (with gParted) worked
fine too, could check it using windows.