The W-N-B-A is midway through its fifth season, with 16 teams fanned out across the country. But with both attendance numbers and t-v ratings slipping, many wonder how much longer the league can hang on. But WNBA President Val Ackerman isn't among them. She looks at the numbers and doesn't hesitate to say the league is here to stay. She's in the Twin Cities to watch tonight's match-up between the Minnesota Lynx and the Houston Comets at the target center. She says the W-N-B-A isn't the only professional team struggling for T-V viewers: