[Sunny Thaper]

There are quite a few ways to do it, it mostly just depends on what you consider easier to do. One way is discussed here:
http://lightning.prohosting.com/~veras/facetx.htm
It basically shows you a guess-and-check method of working around it. A better way I have found is using a texture map unwrapper. Basically it takes a 3D object and tears it down to a 2D view making texturing as easy as "here will be the nose" etc. You can find a plug-in for that and much more here:
http://www.dreamsandmagic.com/p_max.htm
There are a couple of different ones. I used the "unwrapper" and it seems easy to use.
The last way is just to go out and buy a program like BodyPaint. I am currently using this method as it is the easiest to me. It takes your 3-d object and sets it up as a virtual canvas while you "paint" onto it. Then you just save your texture and apply it in Max. Though this is the easiest method, it is also the only one that costs money.
Hope this has been of some help.