When I first started solids, I'd nurse first, then after a while try some solids. Once we were up to 2 or 3 meals a day, I'd do one meal first then nurse (usually lunch, as breakfast she was too hungry!
while keeping the other two meals after nursing. A few days later I went ahead and did an afternoon/evening meal/snack before nursing. The last meal to do before a BF ended up being breakfast, simply because it was easiest for us to nurse first thing in the morning.
Since then, Natalie has given up nursing on her own, much to my chagrin, so it's a moot point - sometimes she demands a drink first (from a cup), sometimes food, but at a year old now, I figure she knows her own mind.....