Cannot get into xp from last known safe mode or anything help help help please

Ok heres my predicament.. This all started a few days ago
when I was doing some web updates and direct play somehow
got corrupt. Sooooo tonight I was taking the time to
check my registry against my other machine that it was
working fine on when I did a very bad no no. I exported
the registry to a file to have a backup just in case
something happened on other machine... Then I imported
the registry from my working machine into other pc. I
tried to just print the registry keys but it wanted to
print 250 pages so I cancelled that.. It stopped
responding then computer hosed. Did a cold reboot and now
what i get is a vicious reboot cycle that never stops. I
tried all the options from safe mode command prompt only
to last known and I never even get the splash screen.. It
always reboots when trying to go to splash screen. The
good machine has different equipment in it than the one i
was working on.. IE good one is intel/P4 and other is AMD
2500 so different hardware drivers... I can get into
recovery console but cant really do anything on restoring
a registry from there. Also it always gives me access
denied when I try to go into document and settings folder
where I made the backup file of my good registry. Is
there any way to restore the good registry in this
predicament? Can I just start turning off services with
recovery console until I can get the machine to boot up
in safe mode to run regedit? Also If I need to reload
lemme ask this question. I loaded with NTFS so no way to
go get the file but heres the question. If I reload to
base state can I import the registry that was saved and
it restore the state before I messed with importing
another registry from another machine. I hope so
otherwise I have to spend another 3 days getting the
machine back to where it was. Any help would be greatly
appreciated. Oh also I used to run a proggie caller ERD
commander in win nt 4 is there something like this for
xp besides recovery console and no I didnt make a ASR
backup set.