Hi can any one please tell me where to get the electrizer,magmarizer,dobious..

You get the Eliectrizer on elekid which are found infront of the valley windworks when fire red is inserted in the bottom GBA game card slot.

You get the Magmarizer on magby which are found on Stark Mountain when leaf green is inserted into the GBA game card slot.

You get the dubious disk on the route just north of The battle area.

You get the fossils in the underground.

The dubious disk is near stark mountain, the electrizer and magmarizer you get from wild elekids and magbys. And you get the armor fossil from digging underground

Hey queer boy!!! (no offense)
Electrizer- put leaf green in the game then go to a place where you can get an elekid(i prefer valley windworks) then stock up on pokeballs and catch elekid.
Note that not all of them have the item.

Magmarizer- same as electrizer except put fire red in the game and go to the lava place and a magby wll be in the grass catch it and it might have a magmarizer

Dubious disk- route 225 areas (sorry don't know where)

Armor fossil- man you got to be kidding me!? Just kidding. Go underground and dig in the walls and sometimes you might get a fossil (depending on your game-armor fossil is pearl and skull fossil is diamond) there are other fossils too. I am just too lazy to list them :P

1. On wild electabuzz
2. On wild magmar
3. On route 215, I believe. Check Serebii.net
4. Underground (rare)

Oh, and You're Welcome.

-Shadow Cresselia