One who doesn't invest him/herself but is active in getting listings.

Your keeping an eye on him is a lot less stressful than you doing all the work.

One is more active while the other causes you to wait for the world to come to you.

There is another thread active on this topic, so you might want to look there where I collected a number of BP threads together in one post:http://www.biggerpockets.com/forums/52/topics/40651-who-do-you-use-for-credit-and-background-checks-

I will also post one of them threads about mentoring, I had thought about it but.......I have found a couple of websites - one the of the 2 owner/brokers is an active REInvestor in the area and I sent some emails to the few I found that mentioned working with investors.:)

What advice do you have to help promote Brokerage activity?

As for virus protection, if you want a great FREE product, I'd look at http://www.activevirusshield.com - It is AOL's Active Virus Shield.

My husband and I have been actively searching out agents in PA, around Pittsburgh.

Every bit of literature that I have read stresses getting involved with your local REI club.

Have been active in real estate investing.