Is this a "it worked before but not now" or "it never worked before" issue?
If you are just starting to use the feature, please review the details for its use to assure that you are going my the
guidelines for its use.
Are you using a firewire connection for the capture?
IF you have Premiere Elements version 10 and an nVidia card
•nVidia Driver Rollback PreElements-10 http://forums.adobe.com/thread/1317675
•-Old Drivers http://www.nvidia.com/Download/Find.aspx?lang=en-us
Is the DV capture firewire feature the only feature with which you are having problems or do you have problems using other sources for the Timeline (such as jpg photos, movie files with .mp4, .mov, .wmv, or other file extensions)?