The rule is it must be no larger than 500 pixels wide and 200 pixels high. If it exceded either of these measurements it was too large.
It's easy to fix. Just take the image into a graphics program (like photoshop or paint shop pro) and resize it. If you can't do it yourself, PM me a copy of the image and I'll do it for you.
No one hates you, it just takes time to cultivate friendships (even online ones). Just be patient and continue to participate. That's what all of us did when we first joined.
Cass.