3d milling / engraving

or would this be a better fit http://www.amazon.com/Zen-Toolworks-Car … r_dpwidget

Nope, but the 1st ones seems ok, but is a little pricy. The Zen tool works, you still have buy the motors, spindle, and controller. All you get is just the frame.
I got one off ebay like this one: http://www.ebay.com/itm/TOP-SELLER-MINI … 3f25e1bdcd
If you go this route, get one with the black control box not the blue control box.  If it's too big for what you need, search for 3020.
All depends on what you want to do and and which type of material.
You might also look at this post:http://www.soliforum.com/topic/4844/x61 … nc-router/

Edit: No matter what size you get, you will have wished you gotten something bigger.

these look very enticing but oh myyyyy is that a parralell port i see? let me break out the backstreet boys cause that a major nostaligia trip!

guessing a usb - parallel convertor wouldnt work...be far too easy amiright?

You can run Mach 3 off a USB or Ethernet connector but you need a dedicated motion controller.
the most popular one is the  smooth stepper http://www.warp9td.com/  but there others as well .
Tin

Another option for running cnc is the beagle-bones black computer $45 with xlotech or pmdx cape. http://www.pmdx.com/pmdx-432

the bb becomes a dedicated computer but the size of a couple packs of cigarettes. and for about the same price as  smooth stepper .  The BBB will only run linux cnc but the software is free . You will need a HDMI display and wireless or USB mouse and keyboard.and a couple of cables. Choices choices. 
Tin