Erm...have a look at the thread I linked to

Go to the search page. Click on Direct Connect (below Keyword). You should see your IP address & LW's listening port number. If you don't see any info there, then you're firewalled & direct connect won't work. If that's the case, see here
Connection problems? Check here first!

If you see your IP address & listening port, you can give that info to someone & providing they aren't firewalled & have chat enabled, they should be able to enter your info into their LW & connect directly to your computer to browse your files.

Forget about chatting, it's pretty much broken. Having chat enabled is really only useful for direct connecting & browsing other hosts' files.