I did it through WES. I send my original documents to Nepal got them attested by Tribhuwan University. And have them sent to WES address. I did not trust University officials so my  friend send them by himself but wrote Universirty name as a sender. They charge me USD 105 for each Transcript. Took me a month to complete the whole process. It was back in 2005. 

P.S. -Good thing about WES is that they organize free seminar and workshop for immigrants. I have attended severals of them in NYC which were really helpful.