I wonder if anyone can help me. I rent out my property in Spain and am looking for a way to make things more efficient. I am a Mac newbie and so am struggling a little! For each of my clients I have the following: ADDRESS BOOK: Contact details & notes about the booking iCAL: Calendar entry for booking FINDER: Folder for documents sent / received, booking forms, accounts etc. MAIL: Email folder for correspondence iCAL: In iCal I have the calendar entry for the booking. If I made the entry with information from an email I can click 'URL' in the info section and it will take me to the original email. Is there any way that the URL link can be changed to the email folder where all my email correspondence is stored for that client, rather than just one particular email Similarly in the 'attachment' area I can link to a file, can I change that to link to the folder where I have my documents for that client stored rather than just one particular file Also can I place a link to the Address Book entry for that client so that I can quickly look at my notes when I am in iCal ADDRESS BOOK Is there any way that I can put links in the notes section to link to the iCal entry, the relevant Email folder and the relevant Finder folder? I'm basically looking for a way to switch between all the info I have for one client when I'm looking at their booking in iCal or their entry in Address Book. I used to have a management program (Guestracker) that did all this for me but I only had the windows version and it's no longer available. I have searched on the web for something similar but they are all too complicated for my needs, and too expensive, and I thought I could probably achieve the same thing using the software I already have on my MacBookPro. Also iCal and Address Book will sync to my iPhone through Mobile Me meaning I have the information to hand if I'm away from my computer, I haven't been able to find any Mac software that does that. I hope I have made sense!