Try the nextgen gallery plugin » I think it will do the trick for you
Tnks a lot moshu, I’ve been struggling with this for quite a while…
you have to create classes for that in your style sheet.
To have an image aligned to the left you define a class like for example
.leftimg {float:left;}
In your post you attach the class to your image within the img tag <img scr="yourfolder/yourimage.jpg" class="leftimg"> and you’re done!