Oh, I mustn't forget: try to include an options that will allow the user to clear the previous searches, meaning that the autofill function will be reset without having to exit LW.
Now, if you've already done something like that and I've somehow missed it, then ignore this post.

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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-