So you want to import the models into 3d max 9 im not sure exactly how to do it but you will need some sort of model converter.
I would suggest Fragmotion Its free and ill give you step by step on how to import into max
Step 1- Download frag motion
Step 2-Open fragmotion
Step 3-while in fragmotion click file/open
Step 4-once in the open file screen go to my computer/c drive/program files/the game creators/fpscreator/files/entity bank.
Step 5-find the file you want to upload into fragmotion and upload the x file.
Step 6-When it is in fragmotion you should be able to see it.
Step 7-click file/export
Step 8-Save it to a filetype that will work with max
Step 9-open in max and enjoy
Im not 100 precent sure if this will work you will need to see which file type max can use max is a pretty high end software so it should handel most file types.
If this dosnt work try just uploading the x file of the entitys into max by clicking file/open
Then go to my computer/c drive/program files/the game creators/fpscreator/files/entity bank
pick the x file you want and upload it.
Tell me ur results i would like to know if my advise worked
Jfac rules