I have icon packager 5 installed though when I download an icon package they just download as zipped files:-(( the same applies to "windowblinds". Am I missing something?
No, if you are using IE, things are borked. Either use another browser or change the extension back to .ip or .iconpackage
What package did you download? Some are zipped if other things are included(permission, instructions, etc.)
For WindowBlinds, change it back to .wba