Aha! Yes, I remember that problem well, it was so frustrating when I was trying to get Plucker to work with Sitescooper. The problem lies in the fact that Plucker has been upgraded, so the required path in the sitescooper.cf file needs to change. Have a look at this post here on the Sitescooper mailing list, it's what I used to get it up and running. Without it, I would have been completely lost: http://sitescooper.org/pipermail/sit...q4/001511.html
Also look at this walk-through, it's extremely helpful: http://sitescooper.org/pipermail/sit...q4/001521.html
I'm currently using Plucker desktop (the parser which turns everything into Plucker .pdb files) version 1.6 and Plucker viewer (the program on your Palm) version 1.8. I had to upgrade to this about a month ago (after I corrupted one of the Plucker files trying to be clever about something - advice: DON'T ever touch any file in the Plucker directories unless you have backed it up!!!!!!!!) and sitescooper works just fine with this combination.
Sitescooper is awesome, I just wish it were more user-friendly (a GUI would be nice). If it were able to be incorporated into Plucker itself it would be nice, because sitescooper is no longer under active development, as far as I know.
Let me know how you get on. I had lots of trouble initially with sitescooper (I'm not a programmer, just someone who wants to read news on his handheld) and several people were great in helping me out on the sitescooper mailing list. It's good to be able to (or at least attempt to) help someone else out in a small way, even if it's just flagging URLs out! Sadly, the sitescooper mailing list really seems to be dead now (there seem to be spam posts to it now, which will really kill it). Good to have mobileread.com!
P.S. If you still have trouble, let me know and I'll try to help you. A Plucker/Sitescooper combo works great for me!