The LPE is good
http://www.gnutellaforums.com/gettin...e-edition.html
Of course there's other good clients around, such as Phex, ShareAza, the old BearShare 5, GnucDNA clients, etc.
For light-weight programs:
LW prototypes-lightweight (scroll down to the Beta section),
. Phex,
. Gnucleus,
. the old
Xolox,
. and
. GnucDNA Based BLAckFLAg and Getchaman
These latter light-weight programs will use less system resources, be easier to run on an older computer system.