You're going to have a tough time getting any kind of response from employers in the Denver metro area if you're out of state. There is a big enough talent pool in the area and the market is tight enough that relocating people is not attractive. Some folks figure this out and get local 303 or 720 cell phones and/or a local PO BOX - if you do this, be up front with your situation when you talk to a potential employer, don't lie to them; if you're really moving it's a good idea to have these things anyway.
There's been an uptick in open reqs in the last month or so in the area. I think with the new year, budgets opened up. Here are some lists for you to watch:
Indeed compiles results from a bunch of different sources:
Job Search | one search. all jobs. Indeed
Craigs list used to be a big resource, but dropped off a bit when they started charging:
denver software/QA/DBA/etc jobs classifieds - craigslist
RMIUG has a horrible name but it's well used:
Rocky Mountain Internet User Group
The startup scene is top notch in Boulder, some say it's the number one B-list startup city (after Boston, SF/Bay Area, and Seattle). It has one of the highest per capita rate of software developers in the country and there's a lot of VC money.
One example is OneRiot, which is currently building real time search for Yahoo and is hiring like crazy:
OneRiot.com – Realtime Search for the Realtime Web
Brad Feld is the grandfather of the Boulder VC scene and mentions a lot of companies in his blog that you might want to check out:
Feld Thoughts
There are things like refresh Denver and other meetups that are good for networking:
Refresh Denver
As you head south from Boulder, the companies and jobs generally get more corporate. This is a huge generalization, but largely true. Instead of startups, think insurance providers and defense industry. The software jobs follow 36 to downtown Denver and then down 25 to the Denver Tech Center. I don't know much about defense work or Colorado Springs.
In terms of technology mix, it generally breaks down into two camps for non-defense projects: Microsoft and non-Microsoft. Within the non-Microsoft camp are two camps as well, Java and non-Java. Java is the 800 pound gorilla, used in a large percentage of shops around here. The Denver Java Users Group (DJUG) has regular meetings:
Denver Java Users Group (http://www.denverjug.org/index.jsp - broken link)
Overall, good (and that's the key word here) .NET and Java folks haven't had much of a problem getting jobs, even with the downturn. Outside of that, Ruby on Rails and PHP (photobucket & associate content) have some presence. Knowing RDBMS' like Oracle, mySQL, and Postgres are generally needed for .NET and Java folks.
There are also folks who specialize in web UI technologies like HTML, CSS, and Javascript. These folks sometimes specialize in a single platform, like PHP or ASPX, but some bounce around between them.