Google toolbar & registry in WinXP ?

XPS400 2.8Gig 820 D Dual Core -VIIV
O/S WinXP Media Center Edition 2005
2G.B. DDR2 RAM 533MHZ-4x512M.B.
Samsung Hard Drive 250G.B. 7200RPM
ATI 128M.B.HYPER Mem PCI-E X16 X300SE.DIM
ATI TV Wonder Elite PCI
19" FP
Sigma-Tel Intergrated Audio 7.1 channel
Logitech G15 Keyboard
DVD-/+RW & DVD-ROM
Pertelian X2040 ForeSight Systems LCD information Display
Dell 944 AIO Printer

 

 

      Can someone tell me where the registry key for the google toolbar popup blocker cout is ? I want to open it and set it back to zero ,I use to do it all the time on my previous PC running WinMe ,however I cant find the directions (may have deleted them) on where to look in registry for the correct place to change/reset the popup blocker count ? Thanks in advance !

                                                                                              Take Care Gumba,Nick