This may have been in another forum, but after looking for a while I couldn't find an answer. I just purchased Digital Performer 6 and some of the minimum requirements will force me to update my iMac's memory and OS X. Right now I have OS X v 10.4.11 (even though I have installed all updates since I purchased it in Aug. 2007) and DP6 requires a minimum of 10.4.4 or higher. It also requires 2GB of memory or more and my iMac has only 1GB standard. Now i know i need to buy more memory (i'll just get another 1GB or 2GB). That's a given. **) Should i buy the same exact type of memory? And upon buying it, is it easy to self-install or should i take it somewhere? Even after searching apple.com i still can't find a downloadable update of 10.4.4 or higher. They all seem to be 10.5 or higher with a requirement to already have OS X 10.5, which i dont. **) Are there any sites other than apple.com that will give me access to OS X 10.4.4 or higher so i dont have to purchase leopard? These may be elementary questions for some of you, with very rudimentary answers, but I'm fairly new to the computer side of digital recording. I just dont want to spend lots of money or waste lots of time on these simple steps. Thanks.