got a nice plugin that i lately used after trying all other plugins which converts rss to posts , its the best so far you should try it
http://www.ahmedag.com/blog/how-to-convert-rss-feed-to-blog-posts/
got the same problem and found a solution , ive just posted my review on a software i use its great you should read about it and try it
http://www.ahmedag.com/blog/how-to-convert-rss-feed-to-blog-posts/
