Yes - you can share from another PC.

You will need to manually enter the network address of the folder on the other computer that you want to share (LimeWire (or Java) doesn't support browsing to network addresses).

The network address will be something like:

\\wichbkc\c\myshared

where 'wichbkc' is the name of the remote computer, 'c' is the drive letter and 'myshared' is the folder you want to share (Windows network).

Beware - LimeWire has not been tuned to work well across a network - while it will work - it is likely to be slow and generate a chunk of traffic on your network - particularly while hashing new files.

Mark