Attach file outlook2k/NT4 =out of memory

If I try to attach a file however small in outlook 2000 running on NT4 SP6 i get Out of memory or Sytem resources. Close some windows and try again. Looking in this month’s Technet CDs didn’t help except that it points to possible registry errors or file corruption. Can anyone help? Office 2k was installed fresh on Friday onto a bare NT4 workstation. It’s a Dell optiplex 1GZ proc wirg 256MB RAM. No slouch. The task manager shows 1% CPU usage and very little memory use, so I suspect corruption at some stage. I need this fixed urgently, so would appreciate any help cos I’m stumped!

Thanks

Matt