I've been struggling to run IWD2 on my laptop, but it's mostly fixed now (using ddraw wrapper, widescreen and UI mod) but the last thing that's bothering me: I cant scroll and move the screen since the cursor disappears on the borders, mainly the lower and right border. This is probably because of the widescreen mod. Any way to fix this, making the cursor lock to the game?

I don't know how to lock the mouse pointer to the game, but I humbly suggest you to simply use the arrow keys in order to scroll the screen.

Doesn't work that well doing that either for some reason, there's a second delay when pressing the arrow keys.