Mypollingplace.com is here to help.

AP has the scoop:

With most states reporting massive new voter registrations and many political observers worrying about potential voter confusion and allegations of fraud on Nov.2, one organization has created a web-based tool to answer questions and provide information.

The site, www.mypollingplace.com, is sponsored by the People for the American Way Foundation, a group that has dedicated significant resources toward voter access projects since the contested election in Florida in 2000.

By typing in their home address and zip code into the searchable data base, voters are given the location of their polling place, a map to reach it, and information on the type of voting equipment used at the polling place and how to operate it.

The project is the brainchild of Andrew and Deborah Rappaport, Silicon Valley venture capitalists and major Democratic Party donors who have also been active in boosting voter turnout among young people. Using research, they found that many young people simply didn't know where to vote or were worried about making errors when they voted.

Pass it on.

Later: Electoral-vote.com chimes in with additional information:

Several lawyers have contacted me about the issue of what to do if you show up to vote and the election officials say you are not registered. Here is the procedure. First, be absolutely sure you are in the correct precinct. If you are in the wrong precinct, in most states, your vote won't be counted. If you are not 100% certain of your polling place, go to www.mypollingplace.com and check. Alternatively, call the toll-free number 1-866-OUR-VOTE or your county clerk. If you are sure you are in the correct polling place and the officials claim you are not registered, ask for a provisional ballot and fill it out correctly. You are entitled to one by law. Politely, but firmly, insist on being given a provisional ballot.