Well your character should be in the folder "characters" in your BG directory, for example in
c:\BGate\characters\Ethan.chr
now copy it to the "characters" folder in your BG2 directory, for example:
c:\BGate2\characters\
and its done !!
If you need more help just ask !!
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"Let my spells do the dirty work" Ertai, High Sorceror of the Holy Flame