I've been playing around with Drupal Commerce lately and I really like the fact that its very well organised and modular. Coincidently a project I've been working on requires integration with IPay88 (Malaysia) payment gateway support with Commerce.
I'm now proud to release my first Drupal Commerce payment gateway interface module to the community out there :) Specifically for Malaysian users, you may head on to the Commerce IPay88 project page and download. As always, please backup your site first and run tests with your IPay88 demo merchant account before putting the site to production mode.
If you have any issues with the module, do file an issue at the project's issue tracker page.
I'm also available for Drupal module and theme development services. You may also register for IPay88's merchant account with me. Contact me for more information.