Personally, I wouldn't use a grinder for both pepper and salts, unless you want pepper flavored salt. We use a simple wooden hand grinder that will go from very coarse to fairly fine. Check your local kitchen gadget shop?
Oh, and lemon pepper is basically granulated lemon zest mixed with cracked black pepper.
Guerry >^..^< Pit Beeatch for Team Munchkin
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"If more people would just open their minds, more people would learn things." Wampus