Problem w/pop-up window in IE

Hi,
I am having trouble making a new pop-up window centered. I have found and used a tutorial that I found on a forum. it works very well in Safari and Netscape. However it doesnt work at all in Explorer (which is sort of a problem…). I am working on MacOSX with DreamweaverMX and FlashMX. i have been adviced to try putting the script in DW on a gif-file and/or not to use frames but nothing works. I suppose it’s a problem with Mac and Explorer but does anyone out there know how I can fix it? I have also tried not using Flash but only the “A HREF tag” that’s in the tutorial but it doesn’t solve it. The txt-file with the tutorial is attached.
I would be so happy for an answer!!!:ne: