Some of the week's highlights TODAY CENTENARY CLASSICS Festival Choir and Orchestra at Centenary United Methodist Church. 648-8319. THURSDAY FLOWERS AFTER 5 Extended hours, wine tastings, jazz at Lewis Ginter Botanical Garden Thursdays through September. 262-9887. FRIDAY CHUCK BROWN Go-Go guru for Fridays at Sunset, Kanawha Plaza. 644-8515. FRIDAY INDEPENDENCE DAY Fourth of July festivities are all around the region. SATURDAY HANOVER TOMATO FESTIVAL Seasonal favorite celebrated in Pole Green Park. 779-7948 or 365-4695. SATURDAY, TOO VIRGINIA BEER FESTIVAL Brews, food and bluegrass at Capital Ale House-Innsbrook. 780-2537, ext. 2. ALSO SATURDAY DONNA SUMMERThe diva of disco at the Filene Center at Wolf Trap, Vienna. (877) 965-3872.