First change the MerchantID value to your own. You may also edit the ProductID, Description and Price values.
The MerchantID is the same as your login/store number. Don't be afraid to experiment, you can always change your product information at any time.

<form name=AddProduct action=http://www.ares-server.com/Ares/Ares.asp method=post>
<input type=hidden name=MerchantID value="DEM00071">
<input type=hidden name=Action value="Add">
<input type=hidden name=ProductID value="T-Shirt">
<input type=hidden name=Description value="100% cotton t-shirt">
<input type=hidden name=Price value="5.99">
<input type=text size=2 name=Quantity value="1">
<select name=Option1>
<option value=""></option>
<option value="Large:#_L:$1">Large add $1</option>
<option value="XLarge:#_XL:$2">XLarge add $2</option>
</select>
<input type=submit value="Add To Cart">
</form>

Copy code with table arrangement:
<form name=AddProduct action=http://www.ares-server.com/Ares/Ares.asp method=post> <input type=hidden name=MerchantID value="DEM00071"> <input type=hidden name=Action value="Add"> <input type=hidden name=ProductID value="T-Shirt"> <input type=hidden name=Description value="100% cotton t-shirt"> <input type=hidden name=Price value="5.99"> <table> <tr> <td align=right>ProductID:</td> <td>T-Shirt</td> </tr> <tr> <td></td> <td>100% cotton t-shirt</td> </tr> <tr> <td align=right>Price:</td> <td>5.99</td> </tr> <tr> <td align=right>Quantity:</td> <td> <input type=text size=2 name=Quantity value="1"> </td> </tr> <input type=hidden name=Require_Option1 value="Color is a required field"> <tr> <td align=right valign=top>Color:</td> <td> <select name=Option1> <option value="#errMake a selection for Color">Make a selection</option> <option value="White">White</option> <option value="Red">Red</option> <option value="Blue">Blue</option> </select> </td> </tr> <tr> <td colspan=2 align=center> <input type=submit value="Add To Cart" name="submit"> </td> </tr> </table> </form>