A few options exist:
A) Reassign your numpad keys in your Windows Registry to match their regular counterparts (meh),
B) Binding each key with ctrl or alt to a series of aliases or GearSwap commands (also meh), or
C) This madness:
bind numpad0 down setkey 0 down;
bind !numpad0 down setkey 0 down;setkey alt down
bind ^numpad0 down setkey 0 down;setkey ctrl down
bind numpad0|!numpad0|^numpad0|!^numpad0 up setkey 0 up;setkey ctrl up;setkey alt up
bind numpad1 down setkey 1 down;
bind !numpad1 down setkey 1 down;setkey alt down
bind ^numpad1 down setkey 1 down;setkey ctrl down
bind numpad1|!numpad1|^numpad1|!^numpad1 up setkey 1 up;setkey ctrl up;setkey alt up
bind numpad2 down setkey 2 down;
bind !numpad2 down setkey 2 down;setkey alt down
bind ^numpad2 down setkey 2 down;setkey ctrl down
bind numpad2|!numpad2|^numpad2|!^numpad2 up setkey 2 up;setkey ctrl up;setkey alt up
bind numpad3 down setkey 3 down;
bind !numpad3 down setkey 3 down;setkey alt down
bind ^numpad3 down setkey 3 down;setkey ctrl down
bind numpad3|!numpad3|^numpad3|!^numpad3 up setkey 3 up;setkey ctrl up;setkey alt up
bind numpad4 down setkey 4 down;
bind !numpad4 down setkey 4 down;setkey alt down
bind ^numpad4 down setkey 4 down;setkey ctrl down
bind numpad4|!numpad4|^numpad4|!^numpad4 up setkey 4 up;setkey ctrl up;setkey alt up
bind numpad5 down setkey 5 down;
bind !numpad5 down setkey 5 down;setkey alt down
bind ^numpad5 down setkey 5 down;setkey ctrl down
bind numpad5|!numpad5|^numpad5|!^numpad5 up setkey 5 up;setkey ctrl up;setkey alt up
bind numpad6 down setkey 6 down;
bind !numpad6 down setkey 6 down;setkey alt down
bind ^numpad6 down setkey 6 down;setkey ctrl down
bind numpad6|!numpad6|^numpad6|!^numpad6 up setkey 6 up;setkey ctrl up;setkey alt up
bind numpad7 down setkey 7 down;
bind !numpad7 down setkey 7 down;setkey alt down
bind ^numpad7 down setkey 7 down;setkey ctrl down
bind numpad7|!numpad7|^numpad7|!^numpad7 up setkey 7 up;setkey ctrl up;setkey alt up
bind numpad8 down setkey 8 down;
bind !numpad8 down setkey 8 down;setkey alt down
bind ^numpad8 down setkey 8 down;setkey ctrl down
bind numpad8|!numpad8|^numpad8|!^numpad8 up setkey 8 up;setkey ctrl up;setkey alt up
bind numpad9 down setkey 9 down;
bind !numpad9 down setkey 9 down;setkey alt down
bind ^numpad9 down setkey 9 down;setkey ctrl down
bind numpad9|!numpad9|^numpad9|!^numpad9 up setkey 9 up;setkey ctrl up;setkey alt up
bind numlock exec numpad_unbinds.txt;
echo Numpad Macros: ON (Toggle: NumLock)
unbind numpad0 down;
unbind numpad0 up;
unbind !numpad0 down;
unbind !numpad0 up;
unbind ^numpad0 down;
unbind ^numpad0 up;
unbind !^numpad0 down;
unbind !^numpad0 up;
unbind numpad1 down;
unbind numpad1 up;
unbind !numpad1 down;
unbind !numpad1 up;
unbind ^numpad1 down;
unbind ^numpad1 up;
unbind !^numpad1 down;
unbind !^numpad1 up;
unbind numpad2 down;
unbind numpad2 up;
unbind !numpad2 down;
unbind !numpad2 up;
unbind ^numpad2 down;
unbind ^numpad2 up;
unbind !^numpad2 down;
unbind !^numpad2 up;
unbind numpad3 down;
unbind numpad3 up;
unbind !numpad3 down;
unbind !numpad3 up;
unbind ^numpad3 down;
unbind ^numpad3 up;
unbind !^numpad3 down;
unbind !^numpad3 up;
unbind numpad4 down;
unbind numpad4 up;
unbind !numpad4 down;
unbind !numpad4 up;
unbind ^numpad4 down;
unbind ^numpad4 up;
unbind !^numpad4 down;
unbind !^numpad4 up;
unbind numpad5 down;
unbind numpad5 up;
unbind !numpad5 down;
unbind !numpad5 up;
unbind ^numpad5 down;
unbind ^numpad5 up;
unbind !^numpad5 down;
unbind !^numpad5 up;
unbind numpad6 down;
unbind numpad6 up;
unbind !numpad6 down;
unbind !numpad6 up;
unbind ^numpad6 down;
unbind ^numpad6 up;
unbind !^numpad6 down;
unbind !^numpad6 up;
unbind numpad7 down;
unbind numpad7 up;
unbind !numpad7 down;
unbind !numpad7 up;
unbind ^numpad7 down;
unbind ^numpad7 up;
unbind !^numpad7 down;
unbind !^numpad7 up;
unbind numpad8 down;
unbind numpad8 up;
unbind !numpad8 down;
unbind !numpad8 up;
unbind ^numpad8 down;
unbind ^numpad8 up;
unbind !^numpad8 down;
unbind !^numpad8 up;
unbind numpad9 down;
unbind numpad9 up;
unbind !numpad9 down;
unbind !numpad9 up;
unbind ^numpad9 down;
unbind ^numpad9 up;
unbind !^numpad9 down;
unbind !^numpad9 up;
bind numlock exec numpad_binds.txt;
echo Numpad Macros: ON (Toggle: NumLock)
Save these as numpad_binds.txt and numpad_unbinds.txt in your Windower/scripts folder, then add
exec numpad_binds.txt somewhere in your init.txt file (also in scripts).
Also, this disables the regular functions of the numpad keys unless you hold CTRL+ALT, so you might want to configure it a bit. I know I use numpad0 to tab around.