go to paint and resize them there. once in paint at the top click on image then click on stretch/skew... then where it says 100 change it to like 20. thats what i do with all my pictures. then resave them once there changed size. after all that is done go to like
www.tinypic.com and upload them there. once uploaded the image should appear at the bottom and next to it it will show 3 different links, copy the one that says [IMG] next it and then paste it into a thread.