If you need to submit your sites to search engines, simply do it manually... Because no need to worry about other search engines than google, yahoo and msn.... Oh.. when I started my first site, I rushed to submit it to search engines... Now I started many sites and did not submitted these sites... I simply place new site link on my established site and it will index within 2-5 days....
If you plan to do a directory submission, you need a software... Currently I am slowly submitting my sites to directories using AllSubmitter....