There has to be a way to increase the size of the icons in the various tool bars of CS5 for Windows 7. Who knows where the solution is?
Use a larger monitor or a lower screen resolution. There is nothing in the software to change this.
Optionally, learn or reassign the program's keyboard shortcuts. This is faster and more efficient, in most cases.
I'm curious which icons you're talking about...the tools icons? The transport controls?
Colin is right though...learn the shortcuts...it took me all of 1 day to memorize the ones that I use regularly. The only icons i click with my mouse are keyframe icons and the snapshot icons. Everything else...shortcuts. Works great, very fast.