Hey Steve and Karen,

It looks like you figured it out at least partly because I see two pictures side by side in your Mardi Gras post.  The problem with using a collage created by Picasa is that it is one picture.  When you create a collage – all the pictures are merged into one new file.  So, there is no way to click on the upper left and show a different full-size picture than what you get by clicking on the upper right.

What you need to do is insert image – small size – one right after the other.  The first two will probable fill the blog from left to right margin, then it will wordwrap down to the next line and display the next two.  Since these are separate pictures, click on any one will take you to the full size photo.

Admittedly, this doesn’t give you a whole lot of control over the placement.  If I were doing this I’d create a 2X2 table and place each picture in one cell.  Using Blogger, you’d either need to know how to write the HTML code for tables, OR use Live Writer which includes an ‘Insert Table’ feature.

Here is info on HTML for Tables

And, here is my video on using LiveWriter

Hope that helps

I love LiveWriter – I do all my blog writing there.  The video is using an older version, so be aware that the commands are in different places now – but the concepts are the same.