Help with web traffic : (

My friend and I have launched this site for about 2 years and we’ve been getting good traffic and business. However due to some legal issues we had to cut the site off for about a year and we replaced our old product line to something entirely new. Now the problem is, I can’t seem to really get back nearly as much traffic as I used to get anymore… It seems like the directories which has already crawled our site years ago wouldn’t update our site content. I really don’t want to pay the big money to those search engines or submission “pros” to have them do it… Any ideas and suggestions?