Comment What industry is your company in? (Score 1) 515
That's the first thing I wondered. Until I got my current job with a software company, I was around the same type of IT people. The big difference was that the IT department in my other companies was seen as a necessary expense in order to keep everything running. This tends to shape the attitudes of IT folks, who only get yelled at when stuff doesn't work but who otherwise are relatively invisible. The IT department in my current company absolutely must work in concern with developers, customer support, and executives because our infrastructure simply must support a complex, secure, and ever-changing environment.
Some of the wisdom that you will probably gain if you stick with it is that change in any IT infrastructure is absolutely frightening, be it hardware or software. Veterans understand that each and every piece of hardware and software is tweaked to meet the business requirements of your company, and any small change to anything can bring the whole thing down. Even an OEM-recommended upgrade to a server that has been tested thoroughly can have unexpected and disastrous results. An enterprise level OS upgrade is "nontrivial" and, if your system was already working with XP and there was no compelling reason to upgrade, their attitude is completely understandable.
As you learn how to coexist more peacefully with your IT co-workers, you will notice that everyone has specialized knowledge that everyone else relies on and respects. It is that specialized knowledge that makes them good co-workers. If you respect that and understand that--like you-- they are just doing their jobs, you will understand that the "pat on the back" you seem to desire will come in the form of their mutual respect.
Lastly, as someone you would consider an "older" co-worker, I would say that the any new workers who don't know The System have the potential to be relatively dangerous. They landed their respective jobs because they have lots of knowledge, but don't know enough about The System to understand why things are the way they are. So if you feel coddled or treated in some way that makes you feel under appreciated, I'm guessing it is because you haven't made any impression otherwise yet. You were just doing your job.