Design Icons and Buttons for our website blog page

I need some design work 4 navigation buttons created for the Synergist SCADA Inc website blog [login to view URL] 4 larger versions of the same navigation buttons for Call To Action buttons ... to be featured on our main pages. These will be much larger than the navigation buttons and only 1 will be featured on a page I would like to reorganize my blog into 4 categories: Safety Security SCADA / DCS News I like the way Penny Arcade Reports has organized their blog: [login to view URL] In their Topics area they have icons for Business, Culture, Indie, Production etc... I would like the icons to feature: Safety - Hardhat Security - Lock SCADA / DCS - An ISA Valve Icon (see attached) News - A newspaper I like the simple icon style that Penny arcade report has created. We do not need them to be animated. Please let me know if that makes sense, what you will charge and the timeline.