My Literati has the ability to use SD Cards.  So I purchased a few 2 gigs.  BUT I cant figure out HOW to get the eBooks onto the SD Cards!!  HELP!!!  

I've been playing around with this since my Sony Touch also has an SD slot.  I just save them from Calibre onto the SD card using my computer

Did you need instructions on how to do that?

I learned all about SD cards when I got my Jetbook Lite last year. What I do is use a card reader. I got a couple of them off ebay for pennies. One came direct from a seller in China. Got here fast, too.  That way I never had to bother hooking the ereader up to the computer. Take the card out, put it in the card reader, put the card reader into the USB port of the computer. Open the file where your books are, and drag and drop them into the SD card file that opens (assuming it starts automatically). Eject the card reader when done, insert the card back into the reader. Done! You can even use a free little program called Sync Toy to sync the files on your computer with the files on your SD card. 

It says I have to convert them to epub...  But I cant get them to Calibre !  Any clues??

Are the ebooks on your computer? Open Calibre, select ADD books, find the files and add them. Then after they are added you select Convert.

They aer in my Kobo - PC & it wont let me transfer them to SCCard or Calbrie

You need to download and install the DRM stripping plug-ins to get your Kobo books into Calibre.

Dont know how! Wish I did!  No clue what Plugin is! 

Sarah-

Where to go to get the plug in for Calibre to do the DRM stripping?  I have directions based on whose format it is, but each is different, and I have rarely used it.  If I could set Calibre up to do it on import, that would be better.