Hi i cant find out what the maximum size micro sd card i can use in my jvc evario gz-mg365

You may use any size SD card. Bear in mind that SD cards only go up to 2GB. This camera will not work with higher-capacity SDHC cards.

You will have to copy the VHS cassette to cd, then using the cd, upload the file to a you tube account or video player.

There are no 8GB SD cards. A card that size is actually an SDHC card. SD and SDHC cards fit the same slots, but they are slightly different. Many cameras won't work with the SDHC (high capacity) cards. SDHC is not backwards compatible.

Unless your manual specifically says that your camera can use an SDHC card, then it won't be able to. The maximum size of an SD card is 2GB. If you need more space, just carry a couple of cards and swap them, like people used to do when they filled up a film.

If you did record anything it is either on the hard drive or on the micro SD card (if you installed one). Here is a link to the manual.
http://resources.jvc.com/Resources/00/01/13/45.PDF

You can download the manual from the manufacturer's web site at
http://books.jvc.com/booklist.asp?Model=GZ-MG50US

I have lost my JVC Everio GZ-MG630RAA manual could you please email me this manual thanks Geoff

http://books.jvc.com/booklist.asp?Model=GZ-MG365BUS

Check the user manual and the JVC website for a new firmware.

"Can I use Multimedia Card (MMCA), xD, Micro SD, MiniSD or Memory Stick in EVERIO?"

I would recommend a 2GB card. That will give you maximum storage. There are bigger SDHC cards, but the compatibility is somewhat reduced.  Buy from any reputable store. Avoid prices that are extremely low, these are likely to be counterfeit cards.

There is no limit beyond the limits of the SD cards themselves. The JVC Everio GZ-MG21EK camera DOES NOT support SDHC cards, so you are restricted to the smaller capacities of the non-SDHC SD cards. I am successfully using a 2GB SD card in this model.

Stewart