Imac Stand does not come off

There is no clear answer online, but it does not look like you can. Apple has the option to purchase an iMac with a VESA mount, but it is a build to order option.

I would recommend a call to Apple 800-692-7753. Have your serial number handy, it will help them find the specs for your iMac.

It can get tricky. If you post the year your Mac was made, I can follow up with some instructions.

Check out iFixit as well -- they have a lot of walkthroughs.

iFixit The free repair manual

Hope this helps!

ifixit.com

I believe it's not removable

Well you can but you're not supposed to.

It is best to check with an Apple store, assuming there is one within 100 miles or so, especially if you are under AppleCare, yet--unlikely. My 20" iMac G5 gave up the ghost a year ago. Their cost to repair/replace the logic board was >$800. I've heard 3rd party as low as ~$500. I decide to change to an MacBook 13" (Early 2009 white, then current) and love its convenience.
Try the Macintosh boards where I have posted http://discussions.apple.com/category.jspa?categoryID=134 "Apple - Support - Discussions - iMac G5". No luck for me though. If you have the early G5 that I have, pull power plug and any cables, place face on non-scratching surface, rotate 1/2(?) turn the 3 screws on the bottom, lift off the back and stand, use the power cord to try to start it. There is a button for this but varies with models. If only one LED lights or 2 for a short time you may have my problem. First, after the back is off check if the capacitor tops are bulging. If so that is a known repair, but its coverage expired.
-Ken

place the screen face down on a cloth Go to where the speaker is located and you will see 3 ot 4 screws depending on the model remove those screws and lift the case by the stand and then you can see where the hard drive is located.

From the Samson Audio website...

"Ideal for the traveling musician or the project studio, the G-Track ships with a desktop mic stand, swivel stand mount, USB cable and all the cables needed to connect any musical instrument with a standard 1/4" or RCA output. The G-Track ships with Cakewalk's Sonar LE and works brilliantly with Apple's GarageBand."

If it states that it works with GarageBand, I would say that it would work on a mac.

I've got an iMac and I've been trying to use my guitar rig with my new computer but the interfaces I tried so far ( Spike from Mackie and the US-122 from tascam ) they don't work at all even though they are supposed to work fine with my iMac.....which interface works the best on iMac so  I can use my guitar rig both stand alone or as a VST instrument?.......somebody there with some good suggestions?........thank you in advance