Help needed for downloading

hi,
I am a new member (joined today) and I really liked a couple of applications posted in some of the sections but as I hit the download link the file does not download.
It says either I havent got enough preveledge to download the file or the file might have been removed.
But this happens all the time when I try to download a application.
Can somebody help? As I am dying to download a few good apps. for my Nokia n73.

Thanks in advance
Robinkartik