Can I *undo* my .rar format change?

[xaglx]

I'm having a problem opening a folder filled with .rar files. My understanding of this programming stuff is very limited, so humor me..

The program folder I downloaded from my roommate contains 30 or so files that can be opened with RAR, while there are 30 or so other files with a '.r#' extension (# standing for a number) that do not have a default program to open with.

Me being the idiot I am and for reasons I cannot remember, renamed one of the blank files to have a '.rar' extension. Now that file opens with RAR, and I can no longer unzip the program as a whole.

Is there anyway I can change that file back to it's original state? That is, when I double-click on it, Vista will give me the option to look for a program on the web or to open using an existing program?

Thanks for any help you guys can offer.. :)

[Yawgm0th]

Control Panel (classic mode) > Folder Options > View
Untick "Hide Extensions for known file types"

Rename the file to whatever extension it had.

To extract a split set of .rar files, you should use Winrar or 7-Zip. A quick Google search should get you what you need, as it would had you simply used the search term ".rar"

I think the bigger problem here is that Vista is being used. < (Says the man posting from a Vista Home Premium Dell E1705)

[xaglx]

Oh my gosh, thank you so much, Yawgm0th - that helped me so much, and the fact that you knew such a quick and easy fix for it was simply amazing!
Thanks again, man!