VMware workstation networking

I have Windows Vista installed in my host system and installed Windows server 2008 trail pack as virtual machine, after the server installation I clone the server 2008 virtual machine. When I ping my host from virtual machine I’m able to ping. But from my host system I’m not able to ping VMs, also from one VM to another. I’m using NAT configuration in VMware workstation and the configuration is as follows.
VMWare Workstation V 6.5.3
Host IP address: 192.168.206.1
VM Network: VMnet 8: 192.168.206.0 /24
VM 1: 192.168.206.130
VM 2: 192.168.206.131
NA T gateway: 192.168.206.2
Subnet is: 255.255.255.0
I’m using DHCP configuration for both VMs and Manual or static configuration for Host system. I tried enabling VMware bridge protocol in Host Network IP version 4 properties.
Please help.:)

I'm using Mcafee as Antivirus and Vista built in Firewall, let me try as you suggested and get back.

Thank you.....:)

Yes, I turned off bulit in firewall in Windows server 2008 which has been installed as guest. now the connectivity is there between host and guest. But how come I disable firewall only for VM software. I have added VMNAT.exe in the exception list in host o/s vista, how to add it in guest O/S.

Thanks for you help...

I can ping from guest top host only when I disable the firewall in guest O/S (Windows server 2008), I haven't installed windows tools in guest O/S. Also I have installed Vista home premium 32 bit edition in host. I want to ping from guest to host without disableing fireall fully, or I want to allow only VMNAT.

Hope you can help with these informations:).

Ok, I will install VMTool and try with VMWare-Hosted.exe added to firewall exeption.

Thanks for you help:)