[my question was answered - but I wanted to leave this up for any one else with the same question]

I have ripple wallet, with XRP - I added the  DividendRippler.com contact correctly -
I only have the option of "trusting" DividendRippler.com for BTC (which I have done)-- But I see no option to trust LTC or TRC.

Answer: to type in LTE and TRC - it doesn't matter if they are not in the drop-down menu


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I Registered and sent 1XRP to Dividend Rippler.com -

Ripple address is: r3z24N1mAS7EQBeswjHUr6T7rNiNUbqu8e