Ok, if you go to a category page - you will hopefully see something like: >> Category editors: flame, glynis, liza, lundlinks, rapunzel, theseeker, voiceroy, wkn << (example taken from
http://dmoz.org/Arts/ ). If you click on an editors name, you will be taken to their 'profile' page where you will see the option >> Email: Send to flame <<. Click on 'Send to ...' and enter your email.
There is no method of getting an editors 'real' email address. Personally, since the start of this forum - I would try and avoid emailing editors regarding submissions. Mainly because emailing a single editor will rely on them a) being able to respond to your email [ie not being on vacation/busy] and b) wanting to respond. But if you post to this forum, many many editors will be able to assist you in your query and will be willing to help.
As it is, I can tell you that you submission to Business/Marketing_and_Advertising/Advertising/ Promotional_Items/Business_Items/Cards was rejected in June this year as a previous submission was moved to the 'more appropriate' category of: Business/Industries/Printing/Stationery where it is awaiting review with around 150 other sites.