Hi Donna, thanks so much for getting back to me. I've realised that the reason I couldn't find the 'Guide' button was because I had the home version of MBCreator installed, so i removed it and reinstalled the publisher edition.
Mobipocket Creator Publisher v 4.2 build 41
Microsoft Internet Explorer
4.0 (compatible; MSIE 7.0; Windows NT 6.1; WOW64; Trident/5.0; SLCC2; .NET CLR 2.0.50727; .NET CLR 3.5.30729; .NET CLR 3.0.30729; Media Center PC 6.0)RC
Message: Object doesn't support this action
Any idea what I can do about this?