Hi Guys!
Can you recommend me a good CMS software (PHP) with available e-commerce plugins and modules?
I tried using drupal and uber cart, its simple but it still lacks a lot.

I'm having a hard time with it..
Have you guys tried some already?
ubercart is based on drupal and has a steeper learning curve.
Even on Joomla there's still a learning process. It really depends on the features you are looking for.
Are you more familiar with a particular CMS? rg. joomla, e107, drupal
If so, then look for extentions or modules or add-ons
Are you interested to spend time learning new CMS just for e-commerce?
If so then try
http://www.zen-cart.com/ or
http://www.cubecart.com/ or
http://www.x-cart.com/ (not FREE)
Zen Cart truly is a free, user-friendly, open source shopping cart system. it can be installed and set-up by anyone with the most basic computer skills.
magento and prestashop is new and nice open source scripts
Joomla is great to use with lots of features.
if you need advanced ecommerce system, you should look to specific ecommerce software like oscommerce, zencart or magento.