How can I combine Flv videos just to make one Flv Video?

Ok The Thing is that I want to combine Flv format videos and make it to just one an Example is Lets say I have 4 Flv format videos of FiFa 09 flash video downloader is there any program up there in the internet free or just freeflv downloader trial that can combine FLV Format Videos to make it in just 1 VideoI will reward you with 10 Points For the best Answer !!!! Recommend you a free editing software: FLV Editor Lite Beta. It is professinal editing flv software. It can merge, trim, split,cut FLV and replace music in timeline. Moreover, it is connected with FLV to video converter to output various video formats avi, mpeg, mp4, mp3, wmv, mov and 3gp.