This is a problem on some installs with Win 9x.  Go to this Microsoft knowledge base article:
http://support.microsoft.com/default.aspx?scid=kb%3BEN-US%3BQ305668.
It describes the problem and how to work around it.

>I have a new Epson CX5400 all in one.  I am trying to get it to work with a computer that was part of a network.  It is running Win 98SE & has 512 meg of memory.  It formerly had a HP printer.  The scanner software installs just fine & it will work as a scanner and print from it but when installing the printer software, I get the error message:
>SURegCreateKey failed.  I have removed the HP software & deleted everything I can find connected to the network.  It won't print from the computer.  Can anyone help?
>

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