If you use emacs on lxplus, the mousewheel isn't enabled. To add this functionality, open your ~/.emacs file and write in the following lines:

;; ====== mouse wheel 
;; ====== define scrolling functions 
(defun up-slightly () (interactive) (scroll-up 5))
(defun down-slightly () (interactive) (scroll-down 5))

(defun up-one () (interactive) (scroll-up 1))
(defun down-one () (interactive) (scroll-down 1))

(defun up-a-lot () (interactive) (scroll-up))
(defun down-a-lot () (interactive) (scroll-down))

(defun scroll-up-half ()
"Scroll up half a page."
(interactive)
(scroll-up (/ (window-height) 2))
)
(defun scroll-down-half ()
"Scroll down half a page."
(interactive)
(scroll-down (/ (window-height) 2))
)

;; ====== set mouse wheel to scrolling function 
;; ====== press shift + (mousewheel) for slow scrolling and 
;; ====== ctrl + (mousewheel) for fast scrolling 
(global-set-key [(mouse-5)] 'up-slightly)
(global-set-key [(mouse-4)] 'down-slightly)
(global-set-key [S-mouse-4] 'down-one)
(global-set-key [S-mouse-5] 'up-one)
(global-set-key [C-mouse-4] 'down-a-lot)
(global-set-key [C-mouse-5] 'up-a-lot)

The first four blocks of code define function for different scrolling speeds. In the second part, the mousewheel is assigned to a scrolling speed. Pressing shift oder ctrl while scrolling will alter the speed.

By default, the keys on the numberpad are overloaded with different functionalities by loading a LHCb specific configuration file. If you want the standard numberpad, add the following to the ~/.emacs file:

(defun setnumpad()
  (interactive)
  (global-set-key [kp-decimal] '".")
  (global-set-key [kp-subtract] '"-")
  (global-set-key [kp-enter] '"\C-q \C-j")
  (global-set-key [kp-0]   '"0")
  (global-set-key [kp-1]   '"1")
  (global-set-key [kp-2]   '"2")
  (global-set-key [kp-3]   '"3")
  (global-set-key [kp-4]   '"4")
  (global-set-key [kp-5]   '"5")
  (global-set-key [kp-6]   '"6")
  (global-set-key [kp-7]   '"7")
  (global-set-key [kp-8]   '"8")
  (global-set-key [kp-9]   '"9")
 )

(defun setnonumpad()
  (interactive)
  (load (expand-file-name "$EMACSDIR/edt"))
)

After emacs has started, type alt-x setnumpad to activate the normal numberpad. If you want to deactivate it, type alt-x setnumpad. Note: This is not very sophisticated, as just the configuration file is loaded again.