Study material for TOEIC English test for Thai Speaker on the web ?

Is there a good website (free would be nice) where a Thai Speaker can study for the TOEIC English test ?

it would be nice if instructions were in Thai and English so i could help over the phone by following on the webpage where she was having trouble ,

This is for a job at an International company in Thailand.

or are there sample test questions / audio posted somewhere so we know how hard ( or easy) the test is ?

From Wikipedia

The Test of English for International Communication (TOEIC) is "an English language test designed specifically to measure the everyday English skills of people working in an international environment."

There are different forms of the exam: The TOEIC Listening & Reading Test consists of two equally graded tests of comprehension assessment activities totaling a possible 990 score; the newer TOEIC Speaking & Writing Test comprises tests of pronunciation, vocabulary, grammar, fluency, overall coherence, and structure (organization of sentences) totaling a possible 400 score.

thanks for your ideas