You need to do several steps in order to make this work.
1.) Update the hosts
file. On Windows XP, you can find it under c:\WINDOWS\system32\drivers\etc\
. You should already see the first line from below, it takes care of your mentioned other project. - add the additional ones to make any requests to the mentioned virtual hosts routed back to your own machine.
127.0.0.1 localhost
127.0.0.1 foo-bar.com
127.0.0.1 abcdef.com
127.0.0.1 qwerty.com
2.) Update the vhosts file in Apache configuration. Under your XAMPP folder, add the following to apache\conf\extra\httpd-vhosts.conf
and if needed change the ports (i.e. if you use 8080 instead of port 80).
<VirtualHost *:80>
DocumentRoot C:/xampplite/htdocs/foo-bar/
ServerName www.foo-bar.com
</VirtualHost>
<VirtualHost *:80>
DocumentRoot C:/xampplite/htdocs/abcdef/
ServerName www.abcdef.com
</VirtualHost>
<VirtualHost *:80>
DocumentRoot C:/xampplite/htdocs/qwerty/web/
ServerName www.qwerty.com
</VirtualHost>
3.) Do a quick configuration check. Open {XAMPP-folder}\apache\conf\httpd.conf
your file and make sure that the following part is not commented out by a preceeding #
character:
Include conf/extra/httpd-vhosts.conf
4.) Restart XAMPP.
... and you should be all setup now. Your other project should be accessible at the URI you mentioned if you just put it under C:/xampplite/htdocs/my-project/
.