If you're serious about this then take the time to setup a proper webcomic site. Even if you don't want to pay for commercial hosting (though you really should) you can use one of the many free options out there. Try a quick google for 'free webcomic hosting' and you'll find dozens.

Rosity is an ok gallery site for poser artists and also perhaps for CG art in general, but you really really don't wanna place your comic here. Not only will all the nudity here drive away a large number of your potential viewers (people who read webcomics from work) but you'll have very little control over the presentation and look of everything.