need help with barcode generation

[Dilip]

hi ppl ,
i need some help in generating barcode text thro FOP ..
i am succesfull in creating a input number as a barcode value..

but the problem is i need the barcode to be displayed vertically

i have used code-39-30 font . created an xml document for the font
that is a font file metrics..

is there any way to display the text vertically

or generate an image and rotate it and use it for pdf generation ??
example
the number is 111111
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pls help me out..