To delete photos, go to 'User CP', then down to 'Attachments', then you can delete pictures. The down side is that old posts with those attachments will no longer have them.
If being a supporter isn't an option, and you don't want to delete pictures or use the gallery, image hosting sites are a good option. I upload all my pics to photobucket, simply because I can have them there as a backup in case something ever happens to the computer and both my backup externals (OCD on losing things) fail. You just paste the [img] code in your post and they appear.
"What, exactly, is the internet? Basically it is a global network exchanging digitized data in such a way that any computer, anywhere, that is equipped with a device called a 'modem', can make a noise like a duck choking on a kazoo." - Dave Barry