It's a separate application now, after installing "system-config-services" you should see it appear in the Administration menu.
As for SSH, I should mention from a security standpoint that allowing root logins is generally a bad idea - it would be best to configure users with sudo or to login as a regular user and use "su -" immediately instead. This way you still have root access, but a hacker who breaks in won't.
This is how I usually setup my SSH server (all these commands must be executed by root):
yum install denyhosts
chkconfig denyhosts on
service denyhosts start
This installs and starts DenyHosts, a handy service that bans IPs should they have too many failed authentications. Be careful! You can ban yourself as well if you make too many mistakes while entering the password (default is 5 authentication failures). Edit /etc/denyhosts.conf to fine-tune the settings, or add your hostname/IP range to /var/lib/denyhosts/allowed-hosts to have them whitelisted. Denyhosts will resolve hosts, so if you have a dynamic dns account active you can add it to the whitelist and that way your home IP will always be whitelisted!
sed -i'' 's/#PermitRootLogin yes/PermitRootLogin no/' /etc/ssh/sshd_config
chkconfig sshd on
service sshd restart
This disables root login, configures the SSH service to start at boot and restarts the SSH daemon.
echo "-A RH-Firewall-1-INPUT -m state --state NEW -m tcp -p tcp --dport 22 -j ACCEPT" >> /etc/sysconfig/iptables
service iptables restart
This allows incoming connections on TCP port 22 through the firewall so that you machine can accept external SSH requests. You can also configure this with the GUI firewall tool instead of execute the commands above.
The only thing left to do is to get the port forwarding setup - for this you will need a static IP address. Right-click on the NetworkManager icon near the clock and select "Edit connections". From there, you'll see that you can edit your default interface and set a manual address. If you're not sure what values to use, right-click again on the NetworkManager icon you should be able to view your current connection information - just copy those values. Once you know your static IP address, you'll need to input that into the router so that it knows where to send requests on port 22 to.