CREATE TABLE table_66952 ("Year" FLOAT, "Division" TEXT, "League" TEXT, "Regular Season" TEXT, "Playoffs" TEXT, "Open Cup" TEXT)

What division did the Nashville Metros play in during the year that they did not qualify for the Playoffs, where in the USL PDL League, and had the Regular Season 7th, Southeast?
SELECT "Division" FROM table_66952 WHERE "Playoffs" = 'did not qualify' AND "League" = 'usl pdl' AND "Regular Season" = '7th, southeast'
SELECT "Division" FROM "table_66952" WHERE "League" = 'usl pdl' AND "Playoffs" = 'did not qualify' AND "Regular Season" = '7th, southeast'