Drain the cherries, reserving the juice.
Coarsely chop the cherries.
Add enough milk to cherry juice to make 1 cup of liquid.
In a mixing bowl, combine cake mix, cherries, milk/cherry juice, butter, vanilla and eggs. Mix well with electric mixer.
Pour into greased bundt pan.
Bake 350 degrees for 33-36 minutes.
Remove from oven and cool in pan 10 minutes.
Remove from pan and cool completely.