Guys, I have a mid 2007 Macbook pro 2.33 Ghz, 4GB RAM Core Duo 2 with 15inch Screen. Last year, I upgraded the HD from 120GB to 250GB (Should have gone 500GB). However, now I am planning to make the biggest change ever, replacing Optical drive by SSD or SSD on the regular drive space and installing a 500GB HD in the optical ROM slot. I am also planning to buy the enclosure to use the optical drive through USB in future (I rarely use it nowadays) My Questions, 1. How do I replace the optical drive? Is there a enclosure for 2007 models? I found the site for 2008 or 2009 but not for 2007. 2. Once I have installed the 120GB SSD, how can I make the setup that all my itunes, aperture, iphoto, imail, automatically save on the other drive? I currently have that setup but often times, I have to go and manually delete few folders (iMail doesnt even work, all the mails go to the main HD and I dont know how to manually change the destination folder? 3. if any of you have done that in the past? can you share your experience? my dilemma is that I cannot upgrade my RAM anymore . I have maxed out as my model only go up to 3GB and I have 4GB installed. 4. In short, I want all my application go to SSD and all the data go to 500GB HD that i want to install in the optical enclosure. Also, do you think I should upgrade to 500GB? I currently have 250GB and 100 GB for application and 150 GB for data through partition but my data is very much scattered. Photos on the data side and mails on the application side. I do use time machine to backup on a 500GB external HD, how can I run TM to work on my machine after the changes (very crucial Question) I will really appreciate your help. Thanks again.