Validating an IP address using a script in windows

How do I get a windows script to pull the current DHCP IP address and check it against a range? This is my first time trying to do a script like this and I am lost.

the way the script should function is

get "current IP address"

IF "current IP address" is equal to the range "192.168.1.1 to 192.168.1.255"

print "Your IP address is "current IP address" YOUR VPN WILL NOT WORK"

else

print "Your IP address is "current IP address" THE VPN WILL WORK.

And the window that displays the text should stay open until it is closed manually

Thanks In Advance