1; open this http://www.superresize.me/ and as it says choose any image from your PC
2;

3; It will collect whichever one you fancy, then you scroll down the dimensions to 90x90 select stretch/squeeze the image (not crop)

it will say something like "add to list" and ask you to type an anti-spam message message clue hit 'resize my image'
4; wait a minute while it processes the image, and this window appears, then hit its download line (in blue)

5; your reduced image will be saved on your desktop as a zip file, click to open it and your smaller image is now beside the file,
next open our site, go to user control panel>profiles>Edit Avatar
Edit profile
Edit signature
Edit Avatar
Edit account settings


6; 'choose a file for avatar' (it will be on desktop as 90x90 something)
7; submit it and you should get this message pop up in confirmation

For those of you having difficulty still, send me your image, I'll resize them and send back the image for you to insert in personal setting