I'm having trouble installing AVG Internet Security on my husbands computer

Howard, Try removing AVG by downloading & using the 32 or 64bit 2015 Remover (http://www.avg.com/ww-en/utilities) [Scroll Down], whichever suits your system. If you're not sure about 32 or 64bit on your system have a look @ this link (http://forums.avg.com/ww-en/avg-free-forum?sec=thread&act=show&id=140471#post_140471).
AVG Guru

I have paid for  AVG on my computer and my husband had tried a 30 day trial on his computer.  I called to add his computer to my license.  I am having trouble installing the new one on his computer cause I can't figure out what is old and if I should remove it.  I need help with installing the paid version that I have the license for.

Howard, Try removing AVG by downloading & using the 32 or 64bit 2015 Remover (http://www.avg.com/ww-en/utilities) [Scroll Down], whichever suits your system. If you're not sure about 32 or 64bit on your system have a look @ this link (http://forums.avg.com/ww-en/avg-free-forum?sec=thread&act=show&id=140471#post_140471).
AVG Guru