<<Mounting and Converting 7z vdi Files Virtual Machine>>

running windows vista: downloaded virtual machine and virtual rails
cannot get virtual rails to mount to virtual machine

after downloading virtual rails i attempted to extract it so i could
convert it to vdi file and this is the result
virtual_rails_1.1(1).7z

i followed the tutorial at http://www.virtualrails.org/node/3 to
create a new virtual machine, but when I start the machine i get the
error:
FATAL; no bootable medium found! system halted

i googled and googled and read tutorials explaining that I have to
mount virtual rails to virtual machine but in order to do that i have
to convert 7z file of virtual rails to vdi file. is this correct?
and if so i dont know how to do that. ugh!!!!!!!!!!!!

after downloading virtual rails i attempted to extract it so i could
convert it to vdi file and this is the result
virtual_rails_1.1(1).7z

What do you mean when you say "attempted to extract it"? Did you
extract it? What did you use? Did you get any messages?
A "7z" file is a 7Zip archive file (www.7-zip.org), so if your file is
still called that, I'd be curious that maybe it didn't extract.
You should have a .vdi file, which is the hard-drive from a VirtualBox machine.

i followed the tutorial at http://www.virtualrails.org/node/3 to
create a new virtual machine, but when I start the machine i get the
error:
FATAL; no bootable medium found! system halted

Yup... still sounds like that hard-drive file isn't correct.

i googled and googled and read tutorials explaining that I have to
mount virtual rails to virtual machine but in order to do that i have
to convert 7z file of virtual rails to vdi file. is this correct?
and if so i dont know how to do that. ugh!!!!!!!!!!!!

Download 7zip, and (assuming you're on Windows) right-click the 7z
file and choose "extract here".

PS I've just looked at the VirtualRails download page
(http://www.virtualrails.org/node/2), and it does say "Extract it with
7zip or a compatible archiver" and links to the 7zip web page...
always worth taking a few seconds to collect your thoughts when you're
having troubles with tutorials like these, and start again from the
start.