The first step for submitting an abstract is creating a login profile. After doing it, you can submit your paper's abstract. As mentioned above, it's not necessary to mention the authors names.
Dear all, I think it is quite clear that for any work you have done in cooperation with some other colleagues (i.e. 'coauthors') you have to mention the names of the coauthor; even for an abstract application to a conference. Otherwise you pretend that you have done the work alone by yourself; but this would not be the correct manner.