I have lost my COM2, 3, 4, 5, 6

Having problems with my bluetooth connection, I noticed that COM2 to
COM7 have disappeared.
Only remain LPT, COM1 and COM41 to 51.
Those COM41..51 coming from bluetooth drivers I installed in turn to
activate mes various bluetooth USB keys: curiously, COM numbering
keeps increasing by 11.
I tried removing COM1, expecting XP re-install the whole stuff
but it re-installed COM1 only.
Any idea? Thanks
--
Yves B-G
"...et mon courroux, coucou !" (Desproges)