NT Server Low Virtual Memory

HI
Our NT server 4.0 with SP 5, after restarting and loggin in is giving Dr. watson Error, “failed loading imagehlp.dll”, after that no ICONS and no taskbar on Screen just a blue screen with mouse pointer. Trying to do Ctrl+Alt+Del to go to task manager but then we get “low in virtual memory go to control panel and increase the amount …”, but with no icons and no access to task manager how can we do that? Please Help!!!!!