Some have a general registration where you will submit your key pages. The instructions will ask you for information like your website URL, a brief description, a list of keywords, and an email contact, so have that information handy. Websites have been known to spontaneously disappear from search engine registration lists. Keeping track of where and what you submitted is extremely important in order to follow-up and keep track of where pages need to be resubmitted when significant changes are made. Once your URL is submitted to a search engine index or directory, it can take anywhere from 1 to 6 weeks to be indexed and displayed and there is always the possibility that a submission does not get registered.
Some sites provide any easy way to follow-up on submissions by doing a URL status check.
Be sure to revisit the locations on your registration list every couple of weeks to make sure that your webpage is indeed registered and is being displayed. If not, resubmit your website information. However, I have found that most of the engines and directories they submit to are so obscure that they aren't useful. And using a service like this makes it very difficult to follow-up on the registration status of your page. I recommend using this option only if you have no time at all to register the pages yourself.