By default your downloads are found here: C:\Documents and Settings\"your account name"\Shared

Also, go to your LW Library window, select Saved Files folder & press the Explore button. Sample image here: Using Library Explore button to access downld folder (click on link) & the folder will open up for you. So you can move from there.

You should save your entire incomplete folder including the download.dat & .bak files. After installing LW on new computer, close LW. Then replace the new incomplete folder with the old one. But this MUST ONLY be done whilst LW is closed. That's very important.

Oh & for other music on your computer, check your Music folders at both C:\Music
& also C:\Documents and Settings\"your account name"\My Music

Do an mp3 search for any possible other possible locations on your old computer.