I'm not entirely sure what you mean but I'll try to help. If you mean you're having difficulty navigating through the Simviation CFS3 campaigns and missions downloads section thats because there is only one page. Sorry if thats blatantly obvious to you already but you know how some people are... . I keep this page bookmarked and just go from there;
http://simviation.com/fsdcfs%5B1%5D.htm

If you meant its a pain having to go through each page at a time while navigating through the various downloads, the quickest most obvious solution is simply to type in the page number ( the page that you want to get to) manually into the URL bar (just up there^)...for example, you're on page 1 of the CFS3 aircraft downloads section but you want to skip to page 5, replace the 1 in the url address bar with a 5. Sweet.