How to simulate DDR3 in frame buffering

Hallo, I am new on the forum, and I have just one mounth using QUARTUS 2 10.1 and SOPC builder.

I am working on a frame buffering, I used an example in altera wiki to realize my blocs, and now I have to simulate in order to see if I have my R,G,B at the Video_generator output.

I am using a ddr3 and I don't know how an where put data in put in the DDR3 to simulate with modelsim.

Please if someone can help me :)