If you have access to an admin user on the same machine, you can change the network settings without logging out using the following command –
runas /user:<admin user> “C:\windows\ie7\iexplore.exe ::{20D04FE0-3AEA-1069-A2D8-08002B30309D}\::{21EC2020-3AEA-1069-A2DD-08002B30309D}\::{7007ACC7-3202-11D1-AAD2-00805FC1270E}”
replace <admin user> with the admin account you have access to