If they are the 3-wire type then they can be used on a standard DC controller. If they are the 2-wire type you'll need to use a specialised controller such as this one.
I looked at some BIGW lights earlier this year and they were all two wire unfortunately, I've been unable to find any 3 wire strings other than at one of those 'cheap shops' (Hot Bargain or something like that) and they wanted $50 for a 200 light string :/
If they are the 3-wire type then they can be used on a standard DC controller. If they are the 2-wire type you'll need to use a specialised controller such as this one.