i moved msf3 to /home/opt. installed all the ruby packages suggested.
There is no msfconsole in /home/opt/msf3.
This is error from

Nokia-N900:/home/opt/msf3# ruby1.8 /home/opt/msf3/msfconsole -L
ruby1.8: No such file or directory -- /home/opt/msf3/msfconsole (LoadError)
Where have i gone wrong..?

I used bzip2 and 7zip on a xp machine.
So I'm decompressing on the N900 this time.
Ok i have a /ms3/lib/ folder now. (This was not in /msf3/ last time)