By default, Window 7’s Onscreen Keyboard has the numeric key pad disabled. If you use numbers a lot, you will want to enable the key pad to make it easier to input numbers.
1. Open the Onscreen Keyboard. (Click the Orb, select All Programs, Accessories, Ease of Access).
2. Go to the bottom, right hand side of the keyboard and click the Options key.
3. Check the Turn on numeric key pad checkbox.
4. Click OK.