About Agfa Snapscan E25:
Agfa discontinued its DTP
scanner product line (SnapScan, DuoScan, Horizon and Arcus range) and
digital cameras (ePhoto, ActionCam, StudioCam) at the end of 2001. At
this page is the link for downloading the last valid drivers for your scanner, supporting up to winXP. Try, if you are lucky it may work with Win7
About Acer Aspire 3050:
This laptop has no drivers for Win7 (that's what acer says, not me).
Here is the last driver for your camera supporting up to Vista.
In my opinion try the latest drivers that I send you, since there is nothing to loose.
In case of a problem or clarification, don't hesitate to post.
Thanks and regards
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Stelios