To find F:\RECYCLER you must go to "Tools/Folder Options/View" while looking in My Computer and de-select the option "Hide protected operating system files"
The RECYCLER folder IS the recycle bin, whereas the Recycle bin on the desktop is a shortcut to this folder... It is hidden as it is a system file, and if you delete the RECYCLER folder Windows will recreate it on startup...
But, what is happening is that when Norton deletes the Spyware, it puts it into the RECYCLER folder with a DC- number... this is normal - don't worry about it - what Norton's is finding is already-deleted trojans and spyware.