Video Editing Problem

[UGonnaCry]

I got a Radeon AIW for christmas. I tried out the Video In/Out capabilities, and everything with the ATI Multimedia Center worked great, except for video capture. Capturing video with either the Composite or cable had the same effect. I could capture once, only after a clean boot, but after that I could not capture. I can reboot and capture, but that is it. How can I fix this? Also, I need to know what kind of cable/ how much it would cost, to hook my sound card to a vcr for outputting sound with the video. Also, I tried out the included software, Merlin VR and Ulead Videostudio 4, and they both don't get the job done. They are more of a home-video, import and add titles, etc., not software for clipping, adding effects, layering audio, etc. I have used I-movie on the mac and it is much more like I am looking for. I have also used the trial of Adobe Premiere, and it is really nice, but over $500. The only way I would buy it is if I could try it out first, not a trial but the real version. Does anyone know where I can download one? If there is something out there cheaper than Premiere and meets my needs, please help me out. Thanks