Sherlock= Mac

Open a Finder window (hey, that's probably why it's called "the Finder"). If you're using OS X, you should see at the top right of the window a search field. Insert the search words there (don't look for something very common but instead, try to look for a word that seems rare)
Alternatively, with the Finder selected, press Command-F and run yer search from there.

Normally your files should be located at the home directory (the one that should be named after you) in a folder there called Shared.

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iMac G4 OSX 10.3.9
RAM 256MB
LW 4.10.5 Basic
ADSL anything from 3 to 8Mbps/around 1024kbps

"Raise your can of Beer on high
And seal your fate forever
Our best years have passed us by
The Golden Age Of Leather"
-Blue Öyster Cult-