Problem with connecting a third monitor

[DanTheMan20017]

I have wanted a third monitor for a while now and i have recently borrowed my parents TV to find out if it will work. I connected the TV via VGA ports and plugged it into the motherboard (i think) and it wasn't being detected on neither TV or on the computer. On my graphics card ports (Geforce 750 ti) i have already connected 2 monitors but there isn't enough space to plug in a mini hdmi as it hits the other connections. I really want a third monitor but dont know what to do, can anybody help? (Picture of the back of my computer below)

http://imgur.com/fbqtGto

 

[cwli1_]

All 3 need to be plugged into the graphics card. None can be plugged into the motherboard. You may need a new card.