.obj, .mtl & .tga? How to convert/model swap?? ((SOLVED))

[I MOVED AGAIN]

So im new to all this model swapping stuff, and I wanted to place Bigby's model (from The Wolf Among Us) over snake but I have no Idea how. What program should I use to open obj & mdl0? I really want to learn how to swap models but I have no Idea where to start >~> I'd Really like a program thats free.
Sorry,  I know this is probaly a n00b question >:

Computer and File info if it helps
Computer:
Windows 8
HP Pavilion TouchSmart
500GB

Files (picture):

Sorry but you are not allowed to view spoiler contents.

Solved! Ty.

[Gamma Ridley]

3ds Max

Get the student version

[I MOVED AGAIN]

 :notimp:
Well thats alot of info I have to fill out. Ngh.
Is it okay just to get the 30-day trial or do they do different things?

_{sorryimbeingreallypickyrightnow}

[Gamma Ridley]

If you're okay with only having it for 30 days, yeah sure

[I MOVED AGAIN]

Okay, This is taking long to download but I dont mind :P
So after this is done i can just go to a Model Swapping guide right?

[Gamma Ridley]

Yeah, to get the model into Max, just select Import, then select your .obj, it'll take care of the .mtl and .tga by itself

[I MOVED AGAIN]

Alright, Alright cool.
Thanks for helping!<3
Post Merge: May 25, 2014, 09:08:40 PM
*sobs*
So I installed autodesk, and I went to C:AutodeskWIAutodesk 3ds Max 2015 and theres no .exe/program?? Am I missing something? .-.
Post Merge: May 26, 2014, 08:04:37 PM
Anyone? .----.

[I MOVED AGAIN]

Solved :D