The number one market place for webmasters - SEO Talk, Domains and more

Guys, i´ve using osCommerce to build some e-commerce sites, but it is too much "locked" any change on it it´s a "drama", any one can show other option?

You can try demo of VIBIOS e-Commerce. The link in my signature

__________________
Cost effective PHP web development and outsourcing

What kind of changes are you trying to make?

If it's a template change I'm pretty sure there's a certain structure to follow. As for special features, check if there's a modification that does that already.