<p>I installed Ruby and Ruby on Rails yesterday on Vista 32bit using the directions on this site: <a href="http://rubyonrails.org/down" rel="nofollow noreferrer">http://rubyonrails.org/down</a></p>
<p>So I downloaded the installer, then Gems, then I downloaded rails with Gems.</p>
<p>Now I can't use the Gem or Ruby commands in the command line... so I assume there's something wrong with the environment variables, but I hav eno idea how to set them up in Vista or what to put.</p>
<p>Can anyone help me with this?</p>

In the command line window type
```
PATH
```
then hit return, do you see
```
ruby.exe
```
on the
```
PATH
```
environment variable?
If you installed ruby to say
```
c:\ruby
```
then it'll be
```
c:\ruby\bin\
```
.
Looks like it may be missing from the path.