Stupid NEWBIE question

Hi Squids,

        sorry for boring, probably this question was discussed in list.
        Have 2.2 squid on Debian

here's /etc/squid.conf

acl all src 10.17.161.55 .....
http_access allow all
icp_access allow all
dns_testnames 172.20.100.35
cache_effective_user proxy proxy

user on 10.17.161.55 is using RH 6.2 with X and GNome and app named GNapster

question is:
how can I tell to GNapster app (there's no proxy configuration) to use my
proxy?
is there any shell or X environment settings etc?

Many thanks in advance
Libor

---
Libor Laubacher
Progress DBA Novell/AIX/WinNT
voice: +420 2 67991828
Ceska pojistovna, a. s. - Headquarters, Prague, Czech Republic
http://www.cpoj.cz