Datacolor User to User Support Group.

Hi my name is Wayne and I'm living in Wales UK.
I'm having a problem callibrating my dell CRT monitor with the spyder2.
I followed the instructions carefully my monitor needed lots of red 
added to match the other colour levels, but the before and after 
results were staggering, the before was miles better, the after was a 
lot too magenta (and I mean a lot!) I did it in the dark to avoid any 
ambiant light affecting the results.
Anybody got any ideas where I might have gone wrong, or is this a 
known issue, HELP!!

Thanks  Wayne