You haven't answered any of my questions--especially the budget one, so it's hard to calculate exactly what you need. I will lay out some relatively cheap options for you:
1. DG1 Taig. This is a tiny mill, but will do steel albeit very slowly. At $1700 it is about the least expensive nearly turnkey CNC mill you can buy.
http://deepgroove1.com/cncmill.htm
2. Another, more capable mill, but way more expensive, is the new Novakon NM-145. About $6500:
http://novakon.net/
3. There's always the Tormach options:
http://www.tormach.com/Product_PCNC_770_main.html
http://www.tormach.com/Product_PCNC_main.html
Now, if you are handy, and don't want to spend so much money, you can build a very capable mill by buying a $1500 SX3L:
https://www.machinetoolswarehouse.co...9&cat=0&page=1
and retrofitting it yourself with a $960 CNCFusion kit, (You will have to request longer X ball screw and CR G540 option.)
http://cncfusion.com/smallmill1.html
and These $560 electronics:
http://crevicereamer.com/Page_30.html
CR.
http://crevicereamer.com
Too many PMs. Email me to my name plus At A O L dot com.