I am running VM Ware server but posting it in General because maybe people using other VM Ware products could be having the same problem.
I am running a Windows 7 64-Bit host with Server 2003 VMs using Bridged and Hostonly Adapters (One I just changed to NAT) and I can never repair the connection in Windows. It usually stops at renewing the IP address and sometimes at clearing the ARP Cache...