I'm a little psychic. For instance, I'm fairly certain your sign is Leo, you are not a vegetarian, and you'll receive some money you weren't expecting this autumn. However, without specific information such as the URL, it is kind of hard to see details.
Did I read your message correctly? You are not out to have the pictures show up, you just want to avoid the red crosses when they don't? If so, Opera would be your choice in browsers.
A URL would be a lot of help, but, the usual reasons for a image not showing up are:
You haven't uploaded the images. Use the File Manager to look at your web site and see if the images actually exist. You should even be able to view them from there. Sometimes the upload process corrupts the image and causes the red xs.
You uploaded them to the wrong folder. It is common to group all of your images into a folder named "myPictures", for example. Make sure that your tag specifies the path properly to the image.
You have uploaded the images, but spelled the name wrong in the tag. Bravenet's servers are Linux based and are sensitive to upper/lower case. As far as the server is concerned, "My_Picture.gif" and "my_picture.gif" are different images. Again, using the File Manager, make sure the spelling in your tag is exactly the same as the image on your site.