Thanks a lot; downloaded new version and everything is fine!
I thought it should be an issue with XP, but I just forgot to mention it!...
Best regards.

And something I noticed, since the first time I used BI, the saved files loose some intensity on the blacks when reopened; I say in the blacks because for the moment I only used BI for pen drawings, in black and not for full color illustration, so I can not say if it also happens in other situations, But a saved black and white drawing sure fades when saved, PNG or BKD.