Yes you can let us see bigger images but I suspect it will involve using an image posting site like imageshack or photobucket.
I use photobucket and it is a simple case of: register as a user, upload your image, get the IMG code and paste that into your text of your message.
By using one of these image posting sites the space to hold the image is on the image sharing site and not on the forum server.
Image hosting, free photo sharing & video sharing at Photobucket

