chanching priroity or deleting ubuntu inside windo

I have loaded ubuntu inside windows vista in"C"and ubuntu starts
up as 1st. prior. I would like to know how to deleet ubuntu and save it in "D" insted.
Thks. Georg

Generally, Ubuntu is installed on free space on it's own partition, exclusive to Windows partitions, not within Windows. Unless, of course, you installed it in a virtual machine within Windows.

Can you state exactly how you installed Ubuntu?