for ProE4.0 the host ID is nothing but the MAC address (physical address) of your PC.
Go to Start >> Run
Then type CMD and click enter
This will open the command prompt and you should type in
this will give a bunch of stuff like this
Code:
Windows IP Configuration
Host Name . . . . . . . . . . . . : XXXX
Primary Dns Suffix . . . . . . . :
Node Type . . . . . . . . . . . . : Unknown
IP Routing Enabled. . . . . . . . : No
WINS Proxy Enabled. . . . . . . . : No
DNS Suffix Search List. . . . . . : a.b.c.
Ethernet adapter Local Area Connection:
Connection-specific DNS Suffix . : a.b.c.
Description . . . . . . . . . . . : Intel(R) 82562V 10/100 Network Conne
ction
Physical Address. . . . . . . . . : 00-19-D1-37-7A-5D
Dhcp Enabled. . . . . . . . . . . : Yes
Autoconfiguration Enabled . . . . : Yes
IP Address. . . . . . . . . . . . : 192.168.0.2
Subnet Mask . . . . . . . . . . . : 255.255.255.0
IP Address. . . . . . . . . . . . :
Default Gateway . . . . . . . . . : 192.168.0.1
DHCP Server . . . . . . . . . . . : 192.168.0.1
DNS Servers . . . . . . . . . . . : 192.168.0.1
Lease Obtained. . . . . . . . . . : Monday, November 03, 2008 8:55:42 PM
Lease Expires . . . . . . . . . . : Thursday, November 06, 2008 8:55:42
PM
I have wantedly deleted a lot of personal stuff from the output
anyways the red highlighted thing is your physical address or host ID.
any questions do ask here and we will be happy to answer