IV done it fury here goes!
Delete direct x folder
reboot in safe mode.
in FIND type "direct"
delete ALL files that are obviously DX related..DONT DELETE IF YOUR NOT SURE (catastrophic)
REBOOT into SAFE mode
run "regedit" in RUN and hit enter
go to search and type "direct" again
again, delete all everything that is FOR SURE DX related.
REBOOT
ok now install DX7
the run DXDIAG.exe and make sure there are no conflicts.
if there are, start over
It is pretty much a losing battle
need some luck.