What would I do in XSI to get custom flags? Like anything special to export, anything texture wise, etc. I have my flag pole, and flag attached in xsi at the moment. I want to have a flag as stated in the bottom of the tutorial, but square. Thanks for helping!

Is this the tutorial you speak of?
I haven't done it, but from reading through it, the flag and pole should exported as two separate textured msh files, modeled in the raised position with no special characteristics. Sounds fairly basic to me, i'm sure FragMe! will go into more detail for you when he comes around.

Yes the pole and the flags are two separate models. (well 3 because you need two separately named flag models one for either side)
They get modelled at raised height so when the CP gets taken over it looks like it is lowering the enemy flag and raising yours. So have a dummy root and the flag is a child of it at the proper height. Don't forget to freeze the flag mesh.
Other than that there are no special export requirements

Thanks fragme, I will try and implement it now. What should they be called? Anything in particular? and which files (odf's) need editting? ( i will re-read the tuto,)