I know the feeling...
I was quite happy with Microsoft's desktop search 4 on XP. I could get it scanning UNC paths and all was well.
Now having upgraded my hard drive to SSD and installed Win 7, I'm at a loss what to use for search. I've had to disable the built in Win 7 search for several reasons...
1) I can't find where it's buried the ability to add UNC paths
2) I can't find how to move the index to my D drive so it doesn't murder the SSD
3) Searching specific file extensions is a pain in the arse.
Basically they've tried to make it so user friendly, that doing slightly non-standard things is now very complicated... I'm sure the things I want to do can be done, and it would be great if someone could tell me how to relocate the index, but until then I guess I am just going to have to use my old XP machine running in VirtualBox (I won't go into the Virtual PC pain here) to find things!