What means the ending *.7z or *.zip on your files ? These are compression formats. All my files are compressed to save bandwidth. To get back the raw data format you have to decompress these files. I would recommend the 7-Zip File Archiver (Freeware)
Why are you using an external File Service ? My bandwidth is limited, and all services are offered for free. I don’t want to put more money to this projects. So I’m dependent to services like www.rapidshare.de. If you want to mirror the files contact me and I will link them.