Hi,
Drag and Drop in DotNet are pretty flexible. You can certainly implement this, but there are quite a lot of variables here in terms of how you do it. What part of this is giving you trouble?
You will need to start a drag on the first grid. So this involves using the right SelectTypeRow property setting and also probably handling the SelectionDrag event.
On the destintation grid, you need to handle DragDrop and/or DragOver. You will need to determine which row was dropped on, so I recommend this KB article for that: HOWTO:UltraWinGrid Mouse Position and Row Identification