here's some sql that i would use.
SELECT * FROM movies WHERE item LIKE 'M%'
then if you wanted to automate the deal, just have a array with the three table names in it. Then put a for loop around it. then replace the table with the varible.
so something like this:
//var declair
string sql;
string[] tables = new string[2];
tables[0] = "movies";
tables[1] = "games";
tables[2] = "music";
//now we need the for loop:
for (int x=1; x<2; x++)
//now to build the sql string
sql = "SELECT * FROM " << tables[x] << " WHERE item LIKE 'M%'";
//then do your select here, i would use another array to hold the results from each select statment.
//then display the search results here.
did that help you get started?