I red the post bellow on similar matter
http://forum.virtuemart.net/index.php?topic=88886.0But I did not managed to do the following by my self (in VM1 it is possible and its working well):
For the example, I have 3 products: Nail lack Semi red (sku: 0001), Nail lack Semi blue (sku: 0002), Nail lack Semi yellow (sku: 0003) (they all have the same price)
1. I create new product: "Nail Lack Semi", and create 3 separate child products (Red, Blue, Yellow) with different SKU for every product.
2. After I created parent product and children, I create field in "Custom fields" for the example "Colour".
3. In main product "Nail Lack Semi", under tab "Parent & Child Products" I populate fields for child products.
4. But when I check changes on the live site I don't see any difference on the main product and I don't have ability (select box or something) to choose Colors ("Colour") and put selected choices to shopping cart.
I did however see there is a custom field called "Cart Variant" which has ability of selecting variants and adding different prices, but it is not in any relation with child products.
Thank you very much and if I'm missing something please respond

ps.
Version 2.0 is giant leap forward for VM. I like the code very much.
