Also, when doing a KUID search via the website interface, just use the numbers and the colon between them, like this:
1942:37009
For KUID2 items it's probably best to leave off the last number (version number) and it's colon so that you'll find all the versions and can download the most recent. Also make sure to check all the boxes starting from your version on down. (I even check the pre-SP3 box now since some "unknown" dependencies actually turned out to be pre-SP3 DLS items that aren't available from the DLS anymore, though SP3 versions with different KUIDs were available once I knew what to look for. The DLS at least gave me the info on what the item was.)
Edit: Did a double take after posting, when I actually took a good look at that KUID I posted and recognized that 1942, that's Tafweb and it was some of his items I mentioned that I was looking for that were pre-SP3 items. In any event that particular item is on the DLS and is an SP3 item.