When you say that you've been 'making ship sprites' what stage of development are you at with them? Do you mean that you've assembled the frames for the ships in paint/whatever?
Lets assume that you have.
You need to go into EVNEW and create a new rled/rle8 resource - I can never remember which is which. Hunt in Nova files to see which is the mask and which is not and create a resource from the one which isn't used for masks.
Click on 'File', 'Import'. Using 'Browse', load the sprite that you created. You should now have some settings for 'X size' 'Y size', 'Number of frames' 'First frame' and 'Sprite size' (forgive me if this is inaccurate, but I'm on a computer without EVNEW so I can't check). The sprite size bit sets the number of pixels each frame is, 'X' and 'Y' size is the number of frames horizontally and vertically, and 'Number of frames' does what is says on the tin.
Once you've set those up, click 'Ok'. You should have a fully usable sprite which Nova will recognise. At that point, we get into Spin resources, which I really don't want to explain without having access to the program.
Finally, I want to switch roles - I have a question on much the same issue. I have the sprites loaded into EVNEW, I have masks (in the other resource, if you see what I mean), and I have the spins. But when I load them into Nova, it doesn't recognise that there is a mask, and gives me a nice grey background around the ship. Could someone explain what's going wrong? And explain spins (if neccessary) to Sylvanus?