Interesante discusion!!!
Yes in Honduras sign language is SIMILAR to American Sign Language but not the same. Probably because there have been people from America who have come and taught the deaf people here American Sign Language. The original way the Deaf people signed in this country has changed over the years because of that. They also used to have thier own alphabet and now they use the same fingerspelled alphabet as American Sign Language.
Sign language is not the same all over the world. In fact, British and American Sign Language are very different. http://en.wikipedia.org/wiki/List_of_sign_languages
American Sign Language and British Sign Language also use different fingerspelling alphabets. Here's the BSL alphabet: http://www.youtube.com/watch?v=1pwRDT71YCA
And ASL: http://www.youtube.com/watch?v=60GRdhQYUQ4
The French sign language alphabet is similar to the ASL alphabet: http://en.wikipedia.org/wiki/French_manual_alphabet
Polish :http://en.wikipedia.org/wiki/Polish_manual_alphabet
Japanese has its own fingerspelling as well: http://www.kyoto-be.ne.jp/ed-center/gakko/jsl/zen_jsl04.htm
Aziza, that's not true at all. Many countries have their own sign language, and some countries like Australia have more than one sign language.
Japanese has fingerspelling too. It's called yubimoji. The signs for "a, i, u, e, o, ka, sa, na, ha, ma, ya, ra" and "wa" are borrowed from ASL, while all the other signs for letters in the Japanese language are different. You can search on google images "yubimoji" to find charts of the fingerspelling in JSL.