how can I install iftop on asus wl500gp with olegs firmware ?

http://www.fungible.com/openwrt/index.html

Package: iftop
Version: 0.16_3
Architecture: mipsel
Maintainer: Tim Freeman <tim@fungible.com>
Section: net
Priority: optional
Depends: libpcap, libncurses, libpthread
Description: Curses-based program for showing which
hosts and ports use the most network bandwidth.
Source: http://www.ex-parrot.com/~pdw/iftop/...op-0.16.tar.gz
Filename: iftop_0.16_3_mipsel.ipk
MD5Sum: ed1f2dda43d074dca4ccb3b96073192e
Size: 27429

Package: iftop-bangless
Version: 0.16_3
Architecture: mipsel
Maintainer: Tim Freeman <tim@fungible.com>
Section: net
Priority: optional
Depends: libpcap, libncurses, libpthread
Description: Curses-based program for showing which
hosts and ports use the most network bandwidth.
This version has the "!" command disabled so you can't start
subshells. This is good if you want to use it as a login shell.
Remember to add it to /etc/shells if you do this.
Source: http://www.ex-parrot.com/~pdw/iftop/...op-0.16.tar.gz
Filename: iftop-bangless_0.16_3_mipsel.ipk
MD5Sum: 7cbeb0ef1cb423abb246aec86f1df291
Size: 27045