resuming "incompleted downloads" after power failure ?????

Hello Folks
Love the program, and the sharing attitude of all those out there in cyber land.
First problem: Having restarted my G4 after a power outage I find those incompleted downloads listed in the "Incomplete" folder, but not in the active download portion of my LimeWire page. How do I reactivate these incomplete downloads?
Second Silly Question: "Chat". I've attempted many times to chat with those who are uploading from me, or from whom I'm downloading only to find that after I've brought up the Chat Box, I have a dead keyboard. The keyboard itself isn't dead, what I type just doesn't appear in the chat box (or anywhere else). What have I neglected to do??

Many thanks
Jeff Bruce
Central Florida