No, I'm afraid you can't. In order to play multi you need to have the exact same game, without any add-ons or patches that the other player doesn't have.
So eithre you need to deinstall TOB or your friend needs to buy it
Good luck!
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Melusine, High Queen of Fluffies, Archbabe of the OHF, the LH,
the HADB and the SPAE(Society for the
Prevention of Acronym Extinction) &
Official Entertainer Elf of the BG2 Bar
Your voice is ambrosia
Amy Brown Fantasy Art