Window XP Sp2 - MS Ofc 2000 / Excel

I created a list in Excel by doing a copy/past from a web site.
(List of name, address, phone, website) I did a save when done
and then tried to disable all the hyperlinks on the page. Followed
directions I got off the web, F11/Macro to remove hyperlinks.
I closed and saved and then when I tried to re-open it but got
the following error msg:
'The workbook contains a type of Macro (MS Excel ver. 4 macro)
that cannot be disabled nor signed. Therefore, this workbook
cannot be opened under High Security Level.'

This is all Greek to me, please help so I can get it opened,
removed the hyperlinks and make like a plain Excel file again.

Thanks in advance for your help !