FRAMESETS - border="0" or frameborder="0" - Illegal? Other methods?

Hello the members of www-html@w3.org :-)

After asking the question in IRC rooms/channels and the newsgroups. Didn't get the answer I wanted. Hope this is the right place to ask the question ...

I fellow the W3 recommendations for frames. Ending up like below ...

-- snip --
<FRAMESET cols="*, 640, *">
  <FRAME src="left.html" frameborder="0" marginwidth="0" marginheight="0" noresize>
  <FRAME src="center.html" frameborder="0" marginwidth="0" marginheight="0" noresize>
  <FRAME src="right.html" frameborder="0" marginwidth="0" marginheight="0" noresize>
</FRAMESET>
-- snip --

When tested the page - There were grey lines in between the frames (IE4). I assume that using 'frameborder' or 'border' in the FRAMESET tag is illegal.

I wonder if anyone can do me a favour, tell me if there's a way around it. If there ain't any, the safest method of removing the grey lines.

My apologise goes to those who hate frames or this kind of question. Finally, pardon my English (as it's not my first language).

Thank you for taking the time to receive the message and read it. I appreciate it.

Best regards,

Ben.