Homegames I use Fragmotion, but a lot of members have used Sketchup with good results. Your saying you can not use more than one
texture with Sketchup? Maybe your .fpe files are not setup correct?
Also, note that with fpsc Static entities can only have one texture, but Dynamic ones can have two or more. But you must leave the texture path blank in it's .fpe file.
First, are your models static or dynamic?
If your interested in another software there's programs like... Fragmotion, Milkshape, Truespace, Wings 3D, Blender ( each has its own learning curve )
Member Seppgirty likes the program Truespace which you may like also ( He knows more about it than I do )
You should check it out.
My games never have bugs.... they just Explosys's
** WHERES MY YELLOW BUTTON ? **