After I open msfconsole and try to connect I get these errors.

db_connect UN:PASSWD@localhost/DBNAME
[-] No database driver installed. Try 'gem install pg'

msf > db_status
[-] No database driver installed. Try 'gem install pg'


Then I try an instal the gem...

root@kali:~# gem install pg
Building native extensions. This could take a while...
ERROR: Error installing pg:
ERROR: Failed to build gem native extension.

/usr/bin/ruby1.9.1 extconf.rb
/usr/lib/ruby/1.9.1/rubygems/custom_require.rb:36:in `require': cannot load such file -- mkmf (LoadError)
from /usr/lib/ruby/1.9.1/rubygems/custom_require.rb:36:in `require'
from extconf.rb:2:in `<main>'


Gem files will remain installed in /var/lib/gems/1.9.1/gems/pg-0.17.0 for inspection.
Results logged to /var/lib/gems/1.9.1/gems/pg-0.17.0/ext/gem_make.out
root@kali:~#[-] No database driver installed. Try 'gem install pg'

root@kali:~# cat /proc/version
Linux version 3.6.11+ (root@kali) (gcc version 4.6.2 20111004 (prerelease) (Linaro GCC 4.6-2011.10) ) #7 PREEMPT Mon Mar 11 16:46:44 EDT 2013

root@kali:~# cat /proc/cpuinfo
Processor : ARMv6-compatible processor rev 7 (v6l)
BogoMIPS : 697.95
Features : swp half thumb fastmult vfp edsp java tls
CPU implementer : 0x41
CPU architecture: 7
CPU variant : 0x0
CPU part : 0xb76
CPU revision : 7

Hardware : BCM2708
Revision : 000e
Serial : 0000000017c95df0

Thanks for the great OS!!!