Review on Retractable 18 Key Numeric Keypad by Ray Richards

I bought this keyboard because I don't like the num lock option on my laptop. Using this thing is the same, you need to turn on num lock on your laptop to use numbers (if not, the keys work as start, end, and their other functions), so you can't use the entire alphabet. Keyboard And an additional digital block. I've tried this on Vista and XP laptops, neither worked.