I have windows xp x64
works great just fine.

I installed
registry mechanic
and
.net framework 3.5
shit went down the whole.

what I mean is
I no longer have disk defragment
also I lost I don't know how but
I go to control panel
administrative tools
and system management is gone

I have 4 hdds in my system.

2 of them at 10 gb
1 80 main
1 120 primary slave

the 2 10 gb drives are for back up perpuses only.

well now I got a 120gb hdd and a 40gb hdd to replace the 2 10 gb hdds
so I moved all the files from
the to back up drives to my main storage drive and now I need to
install the other drives

I believe it would be best to defragment after this ordeal but I don't
know how to do this.

ok here is the question

how to I save my pc?
I need my tools back and I don't' want to uninstall and reinstall crap
that isn't going to make a difference.