Go to the Models section of The VG Resource, then sign in on the right. Once you have done so, look underneath the website banner and you should see a thin navigation bar. Click on "Submit" from that navbar.
On your left, it will list various systems. Since this is from a PC game, you will want to click "PC/Computer". Click on the letter "T", and choose "Add New Game".
Here is where you will make the page for your game. Type in the game's title and add a picture (use the template here to make one: http://www.vg-resource.com/showthread.php?tid=6534). After this, you will submit your model.
Give the model a name, upload your .zip file and an icon of the model, and add a category for the model (in this case, it would be Vehicles). Then click on "Submit".
And you're done!
On your left, it will list various systems. Since this is from a PC game, you will want to click "PC/Computer". Click on the letter "T", and choose "Add New Game".
Here is where you will make the page for your game. Type in the game's title and add a picture (use the template here to make one: http://www.vg-resource.com/showthread.php?tid=6534). After this, you will submit your model.
Give the model a name, upload your .zip file and an icon of the model, and add a category for the model (in this case, it would be Vehicles). Then click on "Submit".
And you're done!