Travel agcy in BKK - Visa to Russia

Hi guys

We planning for a short visit to Russia, contacted the consulate and they told us to check their website to see the requirement,

in total there are 6 items, what we need is item 3, and 4,

3. Tourist voucher from a licensed Russian travel agent (original or copy).

4. Confirmation of reception from a licensed Russian travel agency (original or copy).

A friend of mine who used to visit Russia many times, he told me that usually obtain these items from a travel agency in his country.

I'm not sure about the process of this here in Bangkok,

anyone done this before? where to find a travel agency specialize in this kind of matters?

Another question about item 5:

5. Copy of medical insurance policy covering the period of the trip.

this medical insurance is similar to health accident insurance? have one from Bangkok Insurance (VIP) can cover up to 100k THB per case, and can claim accident in anywhere in the world as they told me, is possible to use this card? or there must be Russian insurance?

Any additional advises will be appreciated, thanks in advance!