ABA Family Law Section - Organization information.

American Academy of Matrimonial Lawyers - AAML Pennsylvania Chapter - Articles, research.

Pennsylvania Bar Association

Montgomery Bar Association

Domestic Relations - Montgomery County PA

Divorcenet - Attorneys, articles, chat, law.

Hieros Gamos - Large collection of links to legal materials.

Kelly Blue Book - Car values.
Edmunds - Auto values.

Art Brokerage - Art values.
www.artbrokerage.com/

E-Bay

Quote Central - Stock quotes like many sites, but also easy access to historical quotes for determining martial portions.
http://www.quotecentral.com/

SEC - Includes the EDGAR database, which can be invaluable in tracking down corporate information.
http://www.sec.gov/

Westlaw

LawCrawler - Research.
http://www.lawcrawler.com/

FindLaw - Research.
http://www.findlaw.com/

VersusLaw - Appellate opinions.
http://www.versuslaw.com/

SupportGuidelines.com - Good information on child support.
www.supportguidelines.com

Bureau of Labor Statistics - Lots of employment information.
stats.bls.gov

Census Bureau - Demographic data at all levels.
http://www.census.gov/

Switchboard - Find people, phone numbers, addresses.
http://www.switchboard.com/

MapQuest - Maps.
http://www.mapquest.com/

StatSoft - Need to understand an expert's statistical goobledegook? Check out this online statistics text (mostly) in English.
http://www.statsoft.com/

Google

Yahoo - The original and still among the best.
http://www.yahoo.com/

AltaVista - A bizillion hits for every search.
http://www.altavista.com/

Hotbot - A broad engine that gives nicely focused results.
http://www.hotbot.com/

Infoseek - Fast and accurate results.
http://www.infoseek.com/