That pretty easy. Go to Catalog->Attributes->Manage Attributes.
Find SKU at Attribute Code
Change Promo Rule Conditions to Yes from No.
We done first step :)
Then go again to your shopping cart prices rules.
- Define your rule name and blar blar blar at Rule Information. Then, Click on Condition
- Click to (+) Button. Then, Chose Product attribute combination
- Then, new (+) Button appear and click this.
- Choose Category and find your category (e.g Category A or Category B)
- Will see like this.
- Then, new (+) Button appear and click this.
- Chose SKU for your Product A or B. See picture.
- Then Click again from start for your next Category and product.
- Finally, we got next. See pic
Hope help O). Magento make me happy!!!