HyperLink to URL and path

Having just installed CMS it all works fine apart from 2 problems.
If I want to link to another page on my site and click browse it looks at the file folder and I can't look/find the file pages on the root of the site. I think something needs changing to allow me to look at files in the root of the site which is one up from the file folder. It works fine for picture links.
If I type or paste in the url and OK it I get IE script error as seen here attached. Basically a FCK editor error message. But if I do say no to run the script and cancel the hyperlink page the link is actually there and does work correctly.
I have uploaded all the WA iRite files again with the same result.
I get the same problem with XP and Vista on 2 different PC's.
Please help urgently as I need to transfer another site to powercms urgently due to hackers.
Chris

PS I've just seen entry above "Hyperlink script errors" and mine is ok in Firefox.
So that answers part of it but I still need to know how I can look at the root folder to click on the link webpage file.
Please help.