Works fine for me. I cannot reproduce what you are talking about. It starts about middle of the screen, to the far right. Same results in windowed and non. Here is my CastSpellWnd from my ini, just in case it might help you compare or something. I run at 1680x1050 resolution.
Code:
[CastSpellWnd]
INIVersion=1
XPosWindowed=-1
YPosWindowed=3705
RestoreXPosWindowed=-1
RestoreYPosWindowed=3705
BGTint.red=255
BGTint.green=255
BGTint.blue=255
BGType=1
Fades=true
Delay=2000
Duration=500
Alpha=255
FadeToAlpha=255
Locked=false
XPos1680x1050=898
YPos1680x1050=810
RestoreXPos1680x1050=898
RestoreYPos1680x1050=810