I have created a list, by state, of web links of how to vote with an absentee ballot. Don't be fooled, you don't actually have to be absent to vote with an absentee ballot.

This list can also be found at http://www.geocities.com/holesnthesky/absenteevoting.html

Alabama

http://www.sos.state.al.us/election/vr/vr-b.htm

Alaska

http://www.gov.state.ak.us/ltgov/elections/abinfo.htm

Arizona

I was unable to find a link

Arkansas

http://www.sosweb.state.ar.us/elections_voter_arkansas_absentee.html

California

http://www.ss.ca.gov/elections/elections_m.htm

Colorado

http://www.sos.state.co.us/pubs/info_center/main.htm

Connecticut (it's not online, but it tells you where to go to register)

http://www.sots.state.ct.us/ElectionsDivision/Elecform.html

Delaware

http://www.state.de.us/election/absentee.html

Florida(contact your local supervisor of elections)

http://election.dos.state.fl.us/county/index.shtml

Georgia

http://www.sos.state.ga.us/elections/info/voter_info_2003.htm#Absentee%20Voting

Hawaii

http://www.state.hi.us/elections/voteab.html

Idaho

http://www.idsos.state.id.us/elect/voterreg/absentee.htm

Illinois (this is all I could find)

http://www.elections.state.il.us/elecinfo/pages/downloads/pdf/absevote.pdf

Indiana

http://www.in.gov/sos/elections/forms/index.html

Iowa

http://www.sos.state.ia.us/elections/voterreg/voterguidefiles/absentee.html

Kansas

http://www.kssos.org/elections/elections_registration_voting.html

Kentucky (best I could find)

http://www.sos.state.ky.us/Elecfil/Genelectionfiles/voterguide.asp#Absentee

Louisiana

http://204.196.221.226/elect_absentee.html

Maine

http://www.maine.gov/sos/cec/elec/absent.htm

Maryland

http://www.elections.state.md.us/voters/absentee_ballot.html

Massachusetts

http://www.state.ma.us/sec/ele/eleifv/howabs.htm

Michigan

http://www.michigan.gov/sos/0,1607,7-127-1633_11976_11987-28039--,00.html

Minnesota

http://www.sos.state.mn.us/election/forms.html

Mississippi (contact your local voting registrar)

http://www.sos.state.ms.us/elections/VoterRegistrars.asp

Missouri

http://www.sos.mo.gov/section4.asp

Montana

http://sos.state.mt.us/css/ELB/Absentee_Ballot.asp

Nebraska

http://www.sos.state.ne.us/Elections/Absenteepage.htm

Nevada (contact you local county clerk)

http://sos.state.nv.us/nvelection/county/co_clerks.htm

New Hampshire

http://www.state.nh.us/sos/vote.htm#Absentee

New Jersey

http://www.state.nj.us/lps/elections/absentee_doe.html

New Mexico

http://web.state.nm.us/Election/03Special/ABinfo.htm

New York

http://www.elections.state.ny.us/voting/absentee.htm

North Carolina

http://www.app.sboe.state.nc.us/

North Dakota

http://www.state.nd.us/sec/votingabsentee.htm

Ohio (click on "voter services")

http://www.sos.state.oh.us/sos/elections/index.html

Oklahoma

http://www.oklaosf.state.ok.us/~elections/absentee.html

Oregon

http://www.sos.state.or.us/elections/other.info/vr.htm

Pennsylvania (contact your county board of elections)

http://www.dos.state.pa.us/bcel/cwp/view.asp?a=1099&q=431721

Rhode Island

http://www.elections.state.ri.us/mailvote.htm

South Carolina

http://www.state.sc.us/scsec/absent.htm

South Dakota

http://www.sdsos.gov/absentee.htm

Tennessee (contact you local county administrator)

http://www.state.tn.us/sos/election/county.htm

Texas

http://www.sos.state.tx.us/elections/voter/reqabbm.shtml

Utah

http://elections.utah.gov/absenteevoting.html

Vermont

http://vermont-elections.org/elections1/absenteevotinginfo.html

Virginia

http://www.sbe.state.va.us/election/absente1.htm

Washington

http://www.secstate.wa.gov/elections/register_absentee.aspx

West Virginia

http://www.wvsos.com/elections/voters/absentee.htm

Wisconson

http://elections.state.wi.us/sebpage33.html

Wyoming

http://soswy.state.wy.us/election/vote.htm