After 14 years of moving, the Rainbow Center's push for a permanent home gained ground last week as Prince William County gave the group permission to operate its therapeutic riding program in Brentsville.

The nonprofit organization, which helps children and adults with physical and mental disabilities, purchased land four years ago on Colvin Lane and has been paying off the mortgage since. On Tuesday, the Board of County Supervisors approved a special-use permit for the 40-acre tract, which means the group can move ahead with plans to open a permanent facility.

The organization offers several kinds of equestrian therapy to 50 people a day on property it leases in Gainesville.

Once it raises enough money, the 4-H group plans to start building a large indoor riding arena, a facility that will allow it to expand quarters and stay open in the winter. The new center also will have two outdoor arenas.

Now "we're at the mercy of daylight and, of course, the weather," said Trish Redmond, the center's director.

But before the Rainbow Center can move into its new space, it must raise a sizable sum of money. Redmond said the group probably will have to wait at least a year to move.

Although, she added, "if somebody wants to write a check for $2 million, we'll break ground tomorrow."