upgrading my mac

hi, i want to upgrade my imac g5. does anyone know if this is possible at an apple store. also does ani one know price ranges?

What are you wanting to upgrade?

The iMac's upgrade ability is limited to RAM as far as I'm concerned.

Yea, there are only about 2 or 3 upgrades on iMacs.
- First the RAM. Upgrading that to the max will cost ($75-100 per 1GB stick) or so depending on what you already have. That mod you can do yourself and save a ton of money. Apple charges a load for RAM.
- A new HD will cost $100 or so depending on how many GB you need or want. That should be done at the Apple store for two reasons. First, if you take apart your Mac, you will void the warranty if you still have one. Secondly, I bet its a more difficult mod.
- A new optical drive. If you have only a combo drive you can get a dvd burner installed I assume. If you've got the burner, then you're good to go.
Bryan
To really help you, we need to know your computer's specs.

I bought my mac in sptember 05 and here are the specs:

Machine Name: iMac G5
Machine Model: PowerMac8,2
CPU Type: PowerPC G5 (3.1)
Number Of CPUs: 1
CPU Speed: 2 GHz
L2 Cache (per CPU): 512 KB
Memory: 512 MB
Bus Speed: 667 MHz
Boot ROM Version: 5.2.5f1

so what can i do?

You can't upgrade the CPU, nothing to upgrade it to.

You certainly need 1GB RAM, it will help it run smoother.