Upgrading to Lion and memory requirements.

hi - I have Mac OS X Snow Leopard10.6.8.  I went to download Lion and it said I didn't have enough memory (needed 2GB).  When I looked on my system - it shows I only have 1GB and change left.  Can I not download Lion? Is this Apple's way of making me purchase a new computer?  My iMac isn't that old - almost four years.  I just got the new iphone and I have icloud on that and my iPad.  now, my iphone is not synching my calendar and contacts with my iMac - the store said i needed Lion on my desktop.  I do have a mobile me account - but don't really use it except for the synching of my calendar and contacts - now that's not working.  I have a separate apple ID for itunes, apps, etc.  I would like to get rid of mobile me and have one apple ID.  I'm so confused with all of these changes.  Everything is not meshing as they make it seem:(  I hope someone can help me?  Thanks

No.  All iMacs that can run Snow Leopard can be upgraded to 2 GB of RAM.  For instructrions on upgrading your RAM, check http://www.apple.com/support/imac/ Just make sure to properly identify which iMac model you have:
http://support.apple.com/kb/HT1758
And buy the RAM from a reputable vendor that has a lifetime warranty that specs the RAM for your model*:
http://www.macmaps.com/badram.html

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