Google Form could be the tool for this, it is part of Google Doc web apps. I've been trying it out recently with good results. It's easy to create the surveys/forms and all the information goes back to MS Excel where you can save and analyse it, from here you could export results to any of the MS Office apps. There a alot of online tutorial (podcasts) for this app.
Although this provides qualitative rather than quantitative data. If there's another tool that lets the company create a set of questions, that individuals can then send to trusted colleagues then let me know.