you just create a planar uvwmap modifier assign it to what you want it centered on, select the align button to align it to the normal of a poly you select with a mouse, and then choose fit. if thats a bit tricky because of the shape, you can always select a subobject and apply the uvwmap modifier to a selection rather than the whole mesh.
Or you can use UVW unwrap modifier and map it by hand.
It's pretty simple really, but does require that you get familiar with some basic mapping tools. They are all well documented in the manuals which are the same as the online help.
Or you can use UVW unwrap modifier and map it by hand.
It's pretty simple really, but does require that you get familiar with some basic mapping tools. They are all well documented in the manuals which are the same as the online help.