Instal Required Core Ubercart

The next step is to download and install Ubercart. Ubercart isn't just one module, but a package of modules. Because not all e-commerce sites have the same needs, Ubercart is broken into various modules that each contribute different parts to an e-commerce store. You can download the latest version of Ubercart that is compatible with your version of Drupal. After decompressing the tarball, like with the previous modules, upload the decompressed ubercart folder to your modules directory (sites/all/modules) and browse to Administer > Site building > Modules (admin/build/modules) to start enabling Ubercart modules! To prevent troubles caused by enabling multiple modules at time from different subdirectories, we recommend installing the four required core modules first. This means you should install Cart, Order, Product, and Store from the Ubercart - core module group before installing any other Ubercart related modules.

Required Modules for Ubercart

Here's the list of modules that we will need for Ubercart. Every module listed below contains the module's project page on drupal.org as well as a download link to each release that's supported by Ubercart. Like with the Drupal package, each module is compressed in a tarball (.tar.gz) format. For each module, you will extract the directory contained in the compressed file and upload it to sites/all/modules directory.. After you've uploaded these modules, you can install them on the module administration page (found by going to Administer > Site building > Modules). After you've uploaded each module, they should be displayed among the list of modules on your Drupal website. You can enable them by clicking the checkbox next to each module and clicking the Save Configuration. Once you've finished this step, you're ready to move on to the last step, installing Ubercart.

Ubercart Package

Download the latest version of Ubercart that is compatible with your version of Drupal. Upload the decompressed Ubercart folder to your modules directory and browse to Administer > Site building > Modules (admin/build/modules) to start enabling modules!

Required core modules

These are the modules that Ubercart uses for basic core functionality as an e-commerce site. Without these, you simply can't run an e-commerce site. The exception is that it would be possible for you to not enable Cart if you just wanted a way for administrators to enter orders themselves.
Cart (ubercart/uc_cart)
Gives you a shopping cart for an Ubercart e-commerce site.
Order (ubercart/uc_order)
Allows you receive and manage orders through your website.
Product (ubercart/uc_product)
Allows you to create products for your store. Imagecache and CCK Image field are recommended for displaying images of products.
Store (ubercart/uc_store)
Allows you to setup the store settings and manage your Ubercart site.