Hi, can anyone help me. I have a color classic that has the Sonnet Presto 040 upgrade card installed. I was running system 7.5.3. By accident I erased the presto 7 system extension needed by system 7 to recognize the upgrade card. When I went to reinstalled it from the original diskette the disk would no longer read. When I went to the SonnetTech web site the only software available for download was for the Presto plus and the download only has the presto 8 extension which does not seem to work with my card. Is there anyone that would have I copy of this extension. I have looked on the web but cannot find the presto 7 extension.