I have a Microsoft keyboard with a zoom lever and volume buttons on the left end. The keyboard zoom lever works with everything I have tried so far ( open office, ulead photo impact, etc.) but the CTRL plus + or - seems to work in all browsers I have tried.

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Intel 6320
4 gigs ddr2 ram
160 gig sata
evga 8800 gts video card
vista home premium sp1 - 64 bit