Not that hard really. If I were you, I'd swap in a poly bushing and use one of these
http://www.firmfeel.com/lcapins_a.htm
Never have a problem with squeaks again.
Also while you have the lower control arms out, I'd reinforce them.
http://www.firmfeel.com/reinlca_a.htm
They sell just the plates needed to do the job.
