I fully support what Razzle says. I don't think it matters when you take them, as long as you remember, and do it with meals.

I tend to take my multi vitamin and mineral along with cod liver oil in the evening with my dinner and in the morning have chromium (some also in multivit) and potassium at lunch time (also in multivit). As I keep the latter at work it means I have to remember to take them home at the weekends!!!