For example add into /etc/apt/sources.lists following lines: 

# some coment
deb http://www.cecak.cz/debian/sarge ./
[ICO]NameLast modifiedSizeDescription
[PARENTDIR]Parent Directory  -  
[ ]Override2007-01-06 22:20 0  
[TXT]HEADER.html2007-01-06 22:37 151  
[ ]clamav_0.90.2-1~bpo.1.dsc2007-06-19 13:23 658  
[ ]clamav_0.90.2-1~bpo.1_amd64.changes2007-06-19 13:23 2.2K 
[ ]Packages.gz2008-10-24 22:01 9.2K 
[ ]pdns_2.9.20-8+etch1-loc1_all.deb2008-10-24 21:52 18K 
[ ]Packages2008-10-24 22:01 41K 
[ ]pdns-backend-sqlite_2.9.20-8+etch1-loc1_amd64.deb2008-10-24 21:52 53K 
[ ]pdns-backend-mysql_2.9.20-8+etch1-loc1_amd64.deb2008-10-24 21:52 55K 
[ ]pdns-backend-pgsql_2.9.20-8+etch1-loc1_amd64.deb2008-10-24 21:52 57K 
[ ]libenca0_1.9-1_sparc.deb2007-03-19 18:08 74K 
[ ]pdns-backend-pipe_2.9.20-8+etch1-loc1_amd64.deb2008-10-24 21:52 77K 
[ ]enca_1.9-1_sparc.deb2007-03-19 18:08 83K 
[ ]libbind9-0_9.3.4-2etch3loc1_amd64.deb2008-08-03 11:38 93K 
[ ]libisccc0_9.3.4-2etch3loc1_amd64.deb2008-08-03 11:41 94K 
[ ]libenca-dev_1.9-1_sparc.deb2007-03-19 18:08 100K 
[ ]dhcp3-relay_3.0.4-13_amd64.deb2007-03-13 21:49 101K 
[ ]pdns-backend-geo_2.9.20-8+etch1-loc1_amd64.deb2008-10-24 21:52 107K 
[ ]libisccfg1_9.3.4-2etch3loc1_amd64.deb2008-08-03 11:41 108K 
[ ]liblwres9_9.3.4-2etch3loc1_amd64.deb2008-08-03 11:41 111K 
[ ]bind9-host_9.3.4-2etch3loc1_amd64.deb2008-08-03 11:38 114K 
[ ]pdns-doc_2.9.20-8+etch1-loc1_all.deb2008-10-24 21:52 149K 
[ ]clamav-testfiles_0.90.2-1~bpo.1_all.deb2007-06-19 13:24 155K 
[ ]clamav-daemon_0.90.2-1~bpo.1_amd64.deb2007-06-19 13:24 172K 
[ ]clamav-milter_0.90.2-1~bpo.1_amd64.deb2007-06-19 13:24 173K 
[ ]libisc11_9.3.4-2etch3loc1_amd64.deb2008-08-03 11:41 183K 
[ ]bind9-doc_9.3.4-2etch3loc1_all.deb2008-08-03 11:38 186K 
[ ]dnsutils_9.3.4-2etch3loc1_amd64.deb2008-10-24 21:52 186K 
[ ]pdns-backend-ldap_2.9.20-8+etch1-loc1_amd64.deb2008-10-24 21:52 196K 
[ ]clamav-base_0.90.2-1~bpo.1_all.deb2007-06-19 13:24 196K 
[ ]clamav_0.90.2-1~bpo.1.diff.gz2007-06-19 13:23 199K 
[ ]dhcp3-dev_3.0.4-13_amd64.deb2007-03-13 21:49 210K 
[ ]dhcp3-client_3.0.4-13_amd64.deb2007-03-13 21:49 216K 
[ ]lwresd_9.3.4-2etch3loc1_amd64.deb2008-08-03 11:41 217K 
[ ]dump_0.4b41-3loc1_i386.deb2007-03-13 23:18 239K 
[ ]dhcp3-common_3.0.4-13_amd64.deb2007-03-13 21:49 281K 
[ ]bind9_9.3.4-2etch3loc1_amd64.deb2008-08-03 11:37 310K 
[ ]dhcp3-server_3.0.4-13_amd64.deb2007-03-13 21:49 314K 
[ ]openvpn_2.0.9-4-loc1_i386.deb2007-12-16 16:47 329K 
[ ]libclamav2_0.90.2-1~bpo.1_amd64.deb2007-06-19 13:24 357K 
[ ]libclamav-dev_0.90.2-1~bpo.1_amd64.deb2007-06-19 13:24 378K 
[ ]pdns-recursor_3.1.4-1+etch2-loc1_amd64.deb2008-10-24 22:01 397K 
[ ]libdns22_9.3.4-2etch3loc1_amd64.deb2008-10-24 21:52 527K 
[ ]pdns-server_2.9.20-8+etch1-loc1_amd64.deb2008-10-24 21:52 593K 
[ ]clamav-dbg_0.90.2-1~bpo.1_amd64.deb2007-06-19 13:24 721K 
[ ]clamav_0.90.2-1~bpo.1_amd64.deb2007-06-19 13:23 851K 
[ ]libmysql++2c2a_2.0.7-3_amd64.deb2007-03-08 21:38 930K 
[ ]clamav-docs_0.90.2-1~bpo.1_all.deb2007-06-19 13:24 1.0M 
[ ]libbind-dev_9.3.4-2etch3loc1_amd64.deb2008-08-03 11:40 1.0M 
[ ]glpk_4.11-loc1_amd64.deb2007-03-08 22:49 1.1M 
[ ]libmysql++-dev_2.0.7-3_amd64.deb2007-03-08 21:38 1.6M 
[ ]sim_0.9.3+cvs20050505-1_i386.deb2007-01-06 22:20 3.3M 
[ ]sim_0.9.3+cvs20050805-1_i386.deb2007-01-06 22:20 3.4M 
[ ]sim_0.9.3+cvs20050805-2_i386.deb2007-01-06 22:20 3.4M 
[ ]sim_0.9.4.2-1_i386.deb2007-01-22 23:30 3.5M 
[ ]clamav-freshclam_0.90.2-1~bpo.1_amd64.deb2007-06-19 13:24 9.2M 
[ ]sim-snd_0.0.2-thermoman-1_i386.deb2007-01-06 22:20 9.9M 
[ ]clamav_0.90.2.orig.tar.gz2007-06-19 13:24 12M 
Apache/2.4 Server at www.cecak.cz Port 80