Triplets, if i remember correctly, you click on my mumsnet on the blue strip - it asks you to confirm your email and password, then...
you are given a list of 6 things,
Registration details
Email options
Mumsnet mates
Public profile
Set up public profile page
See current public profile page
Share photos
click on share photos
Then it comes up with more writing, and a blue hyperlink saying
start a gallery
then it comes up with this:
choose file.................browse
click on the browse button and a new window named file upload will appear and you search through the files on your computer, then select the file you want and click open. The window will close.
Then name the picture and click on the send file button.
You see another page, with a picture you have chosen on the right hand side. If the picture is too big, there is a number in a box, type a higher number in it if you want a bigger photo, or a smaller no if you want it smaller.
Once you've got the size you like, press the store button.
All photos have to be in a jpeg format so if it's still not working, you'll need to re-save your photos and select them as a jpeg photo