I have a problem with a user's laptop moving between a docking station at
our main office, and docking and trying to vpn in from a remote office.

XP Pro. BM3.7sp4. Client32 4.9.

When she docks at the remote office, the main office's dhcp assignment is
"stuck" and she fails the client vpn bootup login screen. I told her to
Still no renew.

Is there away to hook a batchfile in BEFORE the client login screen appears,
and run a release/renew?

Yes. . I tried hardware profiles. . . it does not work because we use
dell docking stations. . . the laptop sees it as the same identical NIC and
no DHCP. Change HW profiles only forces dhcp when you move to a new
Network interface.