When you replaced the throw out bearing, did you also replace the bearing in the flywheel? This could be the squealing you are hearing.
It should always be replaced, whenever the transmission is removed.
2000 X SE
V6 SE 4X4 5spd Build and 00 Silver auto SE 4X4http://www.clubxterra.org/forums/showthread.php?t=26084
Raise TBs (X), paint plastics (X), Replace radiator with one that is bigger and will last (X), install roof lights (X), IAB (X), better tires (X), shackles in rear(X), remove rear sway bar (X), Bilsteins (X)