i think yes, because Muslims believe that all prophets are send by god, it's the same god, so the point is to believe in god not the the way to do it.
But at the same time they believe that Islam is the best religion because it's the latest one :S)

well according to muslims, the christain have made lots of changes in the bible for their own ease. christain are also followers of the prophet. but now a days with the beliefs and the changes they made to thier book some believe christian will go to heaven and some dont. they only belief that its upon God, its God decision who will go to heaven and who will not.

those people will go to heaven who will not share anyone with allah .........who believe there is no worthy of worship except allah and muhammad (peace be upon him) is the last messenger of allah

those ppl go to heaven who do not associate anyone with Allah..

 From what i know, I think that the only true requirement to go to heaven is to believe in one god, but that belief must be whole hearted, otherwise you are but one of the many "hypocrites" who may call themselves believers but will be cast in to the hellfire along with the other nonbelievers. 

All the other "requirements" in Islam seem to me to only be ways of strengthening that belief in one god. If a person tries to take the easy route and just claims to believe in one god and does not follow the rest of the teachings of islam, that person may very well forget about god and ultimately end up in the hellfire.

 Please see Quran Ayah #2 Verse #62
it clearly says anyone who believes in Allah and the day of judgment will not grieve and be scared.
what does it mean ? please see more details. i am not any Alim or Mufti.