To enable sticky keys you need to be rooted, but then it is rather easy.
Go to /system/usr/local/keychars. In this folder there should be a file called Vendor_XXXX_Product_XXXX.kcm, where the XXXX are two sets of four hexadecimal digits.
Since I don't have the pro1 I don't know how they are called. If there is more than one of these, open them up and try to find if it says someting like "Built-in keyboard" at the beginning of the file.
In this file look for a line starting with the word "type" (without quotation marks). Change this line so that it reads "type ALPHA" (again, with