You need to connect them via an HDMI Cable. VGA isn't going to cut it. Once the HMDI Cable is connected, go to Settings > Display Settings and fill in the boxes as appropriate.
>>EDIT
Just reread, didn't see that you don't have an HDMI port.
Use a Component Cable instead, it'll have the same effect.
>>EDIT
http://www.amazon.co.uk/Imperial-Tech-Component-Cable-Black/dp/B00563J6F6/ref=sr_1_5?s=electronics&ie=UTF8&qid=1352038747&sr=1-5
I can personally vouch for that one working.