New User Help

I have purchased Smart FTP to manage my website after recommendations from some (distant) people I know. Trouble is I really don't know how to do it ! I have watched the tutorials numerous times but there must be something I'm missing. My screen doesn't really look like the screenshots. I have Dreamweaver and need to update my website urgently. If this is as easy as everything thinks then I must be really really thick. Any help would be appreciated. Thank you in advance.