I routinely stop alien invasions. Their lazors are no match for my hands (and let's not mention my other weapon... in my pants).
Your move NSA - what have you done lately?
I swear, read the fucking summary before commenting! Changing OS is not an option, changing platform (and therefore "the way the computer is used") is not an option, abandoning MS Office is not an option and OP is not asking for recommendations on an Internet Security package.
(Also, NoScript is really problematic for "normal people", so stop recommending it. AdBlock takes away most nasty things anyway)
The way I see it - the "IT Department" is really just you because the programmers are more akin to an "Engineering" or Tooling department IMO. Are the programmers providing IT support? If so, this is a double edged sword for obvious reasons.
I have worked in offices only slightly smaller than that company and we needed at least two people most days - and we had the benefit of having outside help for a lot of things (having a high staff turn-over didn't help).
I think it's worth making a business case focused argument rather than a "we need help" based one. Perhaps you should get the help of a manager who is not in the "IT Department" to help build, mentor and deliver the case. This isn't necessarily because your existing IT Manager is incompetent, but mostly because he is too close to the issue at hand and is unlikely to be taken seriously because of it. He also sounds like a typical tech guy - and thus probably isn't quite as tuned into non-IT culture.
Asian guy with dreds walks in with a car battery and a charger, sits down, plugs the charger in, and hangs out while the battery charges.
Incorrect!!! Even the old farts are without ads on the internet!
Gonna have to disagree there. Ever done browser toolbar archaeology?
FTFY.
I tell them to turn to the study of mathematics, for it is only there that they might escape the lusts of the flesh. -- Thomas Mann, "The Magic Mountain"