My 91 Integra is making a pronounced *clunk* when accelerating with the wheel turned. I am assuming this is the CV joints going?

How hard of a job is this for a DIYer? What is the best shop manual or online guide to help with this job? Should I replace both sides at the same time, I only hear clunking from one side. If it is overly difficult, any ballpark idea what a mechanic would charge for the job? TIA.

/bill