iMac 21.5" 3.06 GHz Intel Ram upgrade?

[iMacBoy]

Right so i was wondering what RAM i would need to get to upgrade my iMac
Specs are:
21.5"
3.06 GHz Intel Core 2 Duo
1067 MHz RAM

1. Where could i but RAM for this possibly in the UK?

2. Also i hear the 21.5" has 4 Ram Slots? True or False?

3. So i could put 4 2GB Ram in my iMac so that will make out 8GB Ram?

4. Does it work like this? help me please i'm no computer wizz.

5. Also can you update normal memory or would i have to get an external drive?

6. If i ever wanted my iMac back to how it was when it left the box, could i just get the Snow Leopard CD that it came with and just re-install Snow Leopard over my current one, and it will get rid of everything and just replace it will a fresh Snow Leopard with absolutely to files left behind?

THANKS,

I know it seem's like a lot, but this seems to be the only place i can find to help me.

 

[spinnerlys]

1. Where could i but RAM for this possibly in the UK?

That I don't know, but you need 204-pin PC3-8500 DDR3 1066MHz SO-DIMM modules.​

2. Also i hear the 21.5" has 4 Ram Slots? True or False?

True, it supports up to 16GB of RAM with four 4GB modules.​

3. So i could put 4 2GB Ram in my iMac so that will make out 8GB Ram?

Yes.​

4. Does it work like this? help me please i'm no computer wizz.

Yes.​

5. Also can you update normal memory or would i have to get an external drive?

One can, but as you stated, you are no computer wizz, and replacing the internal HDD with a new and bigger HDD is quite hassle-some. A guide on how to do so though.
An external USB or Firewire HDD will work though.​

6. If i ever wanted my iMac back to how it was when it left the box, could i just get the Snow Leopard CD that it came with and just re-install Snow Leopard over my current one, and it will get rid of everything and just replace it will a fresh Snow Leopard with absolutely to files left behind?

Yes, just make sure to erase the HDD first and Zero it out.​

Guide on how to use Disk Utility from the restore / installation DVD.

How to Perform a Clean Install of Snow Leopard OS X 10.6

Mac OS X: How to zero all data on a disk​

 

[iMacBoy]

That I don't know, but you need 204-pin PC3-8500 DDR3 1066MHz SO-DIMM modules.




True, it supports up to 16GB of RAM with four 4GB modules.




Yes.







One can, but as you stated, you are no computer wizz, and replacing the internal HDD with a new and bigger HDD is quite hassle-some.
An external USB or Firewire HDD will work though.



Yes, just make sure to erase the HDD first and Zero it out.
Guide on how to use Disk Utility from the restore / installation DVD.
How to Perform a Clean Install of Snow Leopard OS X 10.6
Mac OS X: How to zero all data on a disk

Thanks a lot, I appreciate your help and time.

 

[spinnerlys]

Thanks a lot, I appreciate your help and time.

No problem. Btw, I edited my post with additional (albeit small) information.

And if you haven't heard of it yet, MRoogle is quite a helpful tool to find lots of answers.