How do I recover zipped files????

I made the mistake of reading the manual on gzip and then following it without thinking! It said that this was a good thing to do:
cat file1 file2 | gzip > foo.gz
(do a man gzip if you don't believe me!).
So, I've done just that and I now have a compressed archive with 30 files in it. When I decompress it it unpacks it into one big archive file. Most of the files are jpegs - if I try to open it with a graphics program it sees the first jpeg and ignores the rest.
What do I need to do to unpack all the files properly>

I wonder. You can use 'cut' to slice files up into fixed sized chunks. Just as you can use 'col' to slice out fixed sized columns. However, if you know what the delimiters are, you can slice things into different sized columns with 'col'.
All I'm looking for is something similar to a variable width column slicer. Presumably all .jpg, .mp3 and other modern files end with some sort of checksum. Isn't it possible to cut them at the checksums? Is there a utility somewhere that does this?
I'd like to be able to pipe the file to imagebrowser, or similar - if it could read from a pipe, then it could bite off .jpegs as it recognised them just as easily. Is there some way of telling it that there is a concatenated file on the way?

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Seidl Michael | http://www.techguy.at |
twitter.com/techguyat | facebook.com/techguyat

How do I recover zipped files????

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