How do I change password for Windows LAN printing?

My Mac when at work, is on a Windows LAN. Today I had to change my password.

Thereafter I couldn't print. Everything just queued on my Mac's print spooler. Checking it I found "WIN_NT_LOGON_FAILURE". This didn't surprise me.

But I could find no easy way to change the password the spooler was using.

In the end, I deleted the printer and re-installed. Everything worked fine then. Surely that's not the only way!

Can someone please let me know how I should have done it?

thanks