linksys router and networking bridge info need

[goat_roper_me]

hello all
ok ive got a linksys router model wrt54g version 6 and a linksys networking bridge model wrt54g and iam needing some info. i all ready know ill have to put range extender antennas on them as my walls in my house and workshop are metal and about 150-200 feet apart so i was looking at these listed below on ebay witch one can i use can anyone tell me i cant make heads or tails of the specs on them plus i dont want to waist money on some thing thats not goin to work
thanks all
goat_roper_me / ron
Wi-Fi Booster Antenna Extender 5 times Original Range
Item number: 370159046507
10dBi Wireless Extender Range Antenna PCI CARD Router
Item number: 370158949734
Wireless 7DBI Range Extender Antenna FR PCI Card/Router
Item number: 250372490728