HDToolBox might complain that unit is not a disk, but "type 7". This propably because the CF card, which is running in IDE-mode, reports itself as a removable device. This caused HDToolBox not to save disk parameters correctly, if I recall correctly. There's a patch on aminet that should fix it and remove that error message and let HDToolBox operate in the usual way.
http://aminet.net/package/disk/misc/HDToolBoxPatch You also need the right version of the patching program to be able apply those patches.
Ebay might be a place to look for some chinese made adapters.
an ebay.de listingI made my own adapter
http://www.iki.fi/mkl/ide2cf/a6i2cf.html