There are several good and recommended vendors of screen protectors for the BlackBerry. These have been mentioned over and over in the threads at BlackBerryForums.com
Barker & Williamson Converter Frequency Shift CV-116C/URR U.S 1956 Vintage
$280.00
Aircom INC Crystal Radio Frequency Meter S4 Vintage 1940s WWII Era UNTESTED
$70.00
1969 RFI EMC Convention ? Radio Frequency Pin Pinback Button #44699
$64.79
High Frequency Analog Clock Radio (Model No.8811) BRAND NEW RETRO VINTAGE
$100.00
NEW IN THE ORIGINAL CARTON VERY RARE SAMSON 25pf UNIFORM FREQUENCY CONDENSOR
$59.99
Crystal Radio High Impedance Earphone Wide Frequency Response with Integral Plug
$18.00
Frequency Channel Indicator US Signal Corps 5820-984-1770 Part Radio Aircraft
$24.95
All About Frequency Modulation - Radio Craft Library 1941 Softcover
$7.50
TCA PRC 152A GPS Multiband Radio 15W Aluminum Handheld Radio VHFUHF US Upgraded
$329.65
US STOCK NEW TCA/PRC-152A Programming Cable Write Frequency Line Data Cable 1PC
$39.01