Hi, I'm not very good at computers, and I don't know a lot about them, so please bear with me. I want to install VMware on my iMac, so I'll be able to use Microsoft Office 2007 for Windows, which supports VBA, which I need for my work. But I've heard a lot about how it's possible for something to go wrong while using the virtual machine, which might cause the whole HDD to get corrupted, as I've read here. So I'm going to install VMware on my iMac, and partition my external HDD (111GB) so that I can install a virtual machine (Windows OS) on it, without risk of corrupting the whole HDD. Now here's the big question: If I were to install the virtual machine onto this external HDD, would I still be able to disconnect it from my iMac when I'm not running neither VMware nor the virtual machine at all? Would my iMac be alright if I were to start it up without the external HDD connected? I ask this because I use this same external HDD to transfer big data files to and fro from different computers. So I will need to disconnect it from the iMac frequently. Please reply ASAP. I would really appreciate any advice or help that you can give!