Question about using UpdateSurface() in DirectX 9

[JimDiesel]

Hi,

Id like to create an off-screen Direct3D.Surface to load
some tiles into to transfer to the backbuffer.

Can I use the UpdateSurface method for this?

Example:

D3Device.UpdateSurface(D3DTileSurface, myRect,
BackBuffer, myPoint)

This doesnt work and throws an error.

Ive set the BackBuffer to the .GetBackBuffer. Would
this be correct?

Basically, I want to be able to load a tileset from
a .bmp to a surface and then be able to blit it to the
screen to create a background. Is this possible?

Thanks in advance,

Jim