When you write a resume, it is important to keep it well organized. Keeping your resume well organized will increase the interest your resume generates. Following is an example of a well organized skills section of a resume I reviewed recently. This particular candidate is an electrical engineer.
Operating Systems: MS-DOS, Windows;
Software: OrCAD Capture, OrCAD PSpice, Mentor Graphics PADS Logic (Capture), PADS Layout, Linear Technology SwitcherCAD (PSpice), AutoCAD, Microsoft Office, MS Project, Visio, JMP.