When trying to find a vegan margarine, look for ones that are lactose free and parve.

Ingredients: Canola oil 53%, corn oil 16%, not more than 16% water, modified palm and palm kernel oils 11%, salt 2.0%, soy lecithin 0.2%, vegetable monoglycerides, potassium sorbate, artificial flavour, vegetable colour, citric acid, vitamin A palmitate, vitamin D3, alpha tocopherol acetate
Please keep in mind that the products I use may not be available in your area, so check your local grocery and health food stores for similar products.