- last post: 01.01.0001 12:00 AM PDT
Is what you're trying to open named Halo_Trial.exe.part? If you try to open anything with a .part extention, it will ask you what you want to open it with. It's got a .part tag because you havn't downloaded it fully. When the download finishes, it will change to an .exe, and self-extract
Oh, you may also need to download WinZip or WinRar if it's got a .zip or .rar extention. If you didn't know that, it would explain why you're buying the trial version.