Where can I purchace a memory card

SD cards max out at 2GB. The A6 does not work with higher-capacity SDHC cards.

I doubt there is anything wrong with the cards. Cards usually come pre-formatted, but you could try formatting them and see if it makes a difference.

However, I expect that your problem is down to compatibility. Many cameras, especially those that are a couple of years old, won't work with SDHC (high capacity) cards. SD and SDHC cards fit the same slots, but they are slightly different. SDHC is not backwards compatible. Unless your camera's manual specifically mentions that you can use SDHC cards, you probably can't. I believe the largest capacity SD card is 2GB. Anything bigger will be SDHC.

Kodak, like most digital camera manufacturers, does not publish the maximum memory card capacity that their cameras will support, but the largest listed in your manual is 1GB. It might support a 2GB SD card, but trying it would be a gamble.

Sorry to be the bearer of bad news, but you cannot increase the memory card capacity in your camera. 1gb was the largest anticipated by Kodak when your camera was designed, and it is the largest that your camera will accept.

Your problem has a very simple fix. The camera which you have is not compatible with SDHC cards. It will only work with regular SD cards.

Your camera is incompatible with the later SDHC specification at the basic hardware level and so cannot format the card which you have purchased.

Note that SD cards are available up to and including 4GB and SDHC start at 4GB so you're not the only person to have made this mistake. In practice there are very few devices designed to use regular SD cards which will work correctly with 4GB SD; Aiptek only designed and tested the IS-DV up to 1GB SD capacity (see page 48 of the user manual), so this is the effective limit to the largest capacity memory card which you can use, if you try larger capacity cards they will either not work at all or will make the camera operations sluggish and you also risk damaging the card itself so that it will no longer correctly format. Aiptek never released any firmware updates to improve the SD compatibility on your camera.

I'm sorry not to be able to offer any way to use your current SDHC card but at least I may have prevented you making another purchasing mistake. Please return the favour by rating my answer.

The problem is that the largest xD card that your camera can support is an M or H 512mb card. The 1gb card is not compatible. The firmware in the camera cannot support memory storage with that capacity. The camera came out before those cards did and there no plans to upgrade the camera to allow those types of cards to be supported.

its not the card! all cameras do not read all the same ds cards...even tgough they may all fit I recomend a sandisk card!

The largest CompactFlash card that Nikon approved for the 5700 is 256MB, which is what I'm using in my 5700. That's small by today's standards and you probably won't even find it in stores. I see some web sellers have 256MB cards for only $6 or so. Other commercial card sellers on the web claim that the 5700 will handle CF cards up to 1GB capacity. That's what I might try since online they're selling for as little as $8 plus shipping. Given that the 5700 was introduced in 2002, any cards bigger than 1GB probably won't work.

you will need to purchase the memory card from a store

How much I know there are no limits. I have information that with 1GB Card there are no problems. It can be that if you use Card with high memory capacity PDA can read data somewhat more slowly.