I recently came across a free genealogy resources for those researching Jewish ancestors buried at Arlington Cemetery. The project was begun by Kenneth Poch, who collected information on Jewish burials until his death. The Jewish Genealogy Society of Greater Washington (JGSGW) has carried on his work, organizing Poch's work into a database and expanding it to include more names and data. The database holds 4,723 burials as of August 2010.
To search the database, click on the search button in the left column. You will need to scroll down a little bit once the page loads and click another search button. You can search by surname, given name or both. Both fields have the option to specify if the name is spelled exactly, starts with or contains the given letters. You also have the preference of choosing what entry to start your search at and how many hits per page you want to see.
The results screen gives you the JGSGW ID code, location of the burial in the cemetery, surname, given name, date of birth and date of death. In the last column, you can click on the hyperlinked details button. This will take you to another page that repeats the information on the results page and adds additional information (when available) which includes place of birth and death, burial date, spouse's name, parents' names, period of service, military branch and medals or honors. As with most genealogy-related databases, some names have more information than others.
According to the project home page, the society intends to add photographs and genealogical data. At the time of this post, however, it does not appear they have gotten around to it yet.