I may not be able to help you. Your last post makes no sense to me.
However, please state the following:
Can you still pull up the standard XAMMP intro page? (yes/no, etc)
What is your O/S? (W2K, WinXP, Vista).
Are you using: Virtual Hosts, standard domain, don't know?
If you can pull up the XAMPP intro page on your server (188.8.131.52), then the firewall is not the issue. It is most likely an Apache configuration issue.
Oh, by the way, are you using XAMPP? If so, what version?