Downloads open as Text Edit files
When I try to download files from the internet or from email attachments they go to my downloads folder but when I open them they come up as what looks like a computer code in a Text Edit window.
At first I thought this was because I was trying to open Windows only file types but I just tried to download a game that was supposed to be for Mac only and it happened here as well. (This is the website I was trying to download from: http://absolutist.com/mac/bubble_shooter/ )
I appreciate I'm probably being a moron but I've trawled the forums here and can't seem to find an answer - any help would be very welcome.
Thanks
MacBook Pro 13", Mac OS X (10.5.7)



