With the economy in the toilet, I am simply looking for work.

I have an unusual technical background and qualifications that are related to some emerging lawsuits. I’ve found some specific lawsuits (and attorneys) online.

If I were an engineer with experience something like automotive accelerator systems:
1. Are there national directories of Expert Witness resumes (like Monster) that attorneys use to find experts?
2. Is it appropriate to contact some plaintiff’s attorneys, and offer my services?
3. Any recommendations for contacting these attorneys? Just find their number and send them a call?
4. Is it unusual for "experts" to contact Plaintiff’s attorneys and offer their services?

Any related advice would be appreciated.