Thanks to some info found in this forum, I was able to find this nice EPROM project on http://www.zws.com/products/epromr2/epromr_stage1.html
The EPROMER 2 seems to fit all my devcart needs, and I'm able to assemble it myself! But, if someone uses this device please tell me one thing:

In the schematics found in this page, there's no Vcc suply to the EPROM socket. Is it a schematic error? However, in http://www.mikeg2.freeserve.co.uk/eprom/eprom.html the guy says that his project is based on zws.com, and it has a wire link to Vcc, which is represented by pin-32 of the EPROM socket.

I know I should ask to the zws.com guy, but he doesn't reply my e-mails. :-(

Any help would be apreciated. Thanks in advance!