Are my graphic card drivers installed properly?

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http://askubuntu.com – I followed this link Correct Way to install the graphic card drivers The link seemed to work fine, as I was able to install the drivers; but with following issues"- I wasn't able to run this command:- sudo sh /usr/share/ati/fglrx-uninstall.sh I was also not able to run this command:- debconf libstdc++6 dkms libqtgui4 wget execstack libelfg0 dh-modaliases But I am able to run fglrxinfo and other related commands. System Specifications:- Graphic Card:- Amd Raedon 6400 series (1G) Ubuntu version:- 12.04 64bit (Fresh Install) (HowTos)