Hello, i am trying to install things into my router. when i try to run command ipkg install screen i am getting

"[root@WL700gE /]$ ipkg install screen
Installing screen (4.0.3-2) to /opt/...
Downloading http://ipkg.nslu2-linux.org/feeds/op...3-2_mipsel.ipk
wget: missing URL
Usage: wget [OPTION]... [URL]...

Try `wget --help' for more options.
Nothing to be done
An error ocurred, return value: 22.
Collected errors:
ipkg_download: ERROR: Command failed with return value 1: `wget -q -P http://ipkg.nslu2-linux.org/feeds/optware/oleg/cross/stable/screen_4.0.3-2_mipsel.ipk'
Failed to download screen. Perhaps you need to run 'ipkg update'?
WARNING: Unable to remove temporary directory: : No such file or directory
[root@WL700gE /]$

--is their any way i can just dowload the package and upload to my router and install myself? thanks