If you need a new Green Bank computer account for GBT observations or working on GBT data, you can send an email to helpdesk-gb@nrao.edu.
You will need to go through a screening process before receiving your computing account. You can begin this screening process by making a Green Bank visitor reservation in the "GBORS" system or by filling out the form at https://info.nrao.edu/oas/dpscompliance
Instructions for getting a Green Bank Computer account are given here: https://www.gb.nrao.edu/pubcomputing/visitors.shtml
If you have forgotten your password for your GBT computing account, you should send an email to helpdesk-gb@nrao.edu. The computing staff will then be able to reset your password and inform you of the new password.