Is this your first time using LW on the laptop?

Did you try installing LW to a folder other than the default (as shown in the link in post #2) & running in compatibility mode for XP?

And did you see the link about Alcohol software (if you have that installed)?

Do you only have one version of Java installed? Which version are you using ATM?

If you're still stuck, try the tips here - maybe running some cleaner apps & then a clean install might help? http://www.gnutellaforums.com/333278-post2.html
Don't worry about purging the downloads queue if you've never been able to use LW on the laptop & if LW won't even open