technically if you practice a religion/religious "Faith" you can not be a Buddhist. not because we wouldn't let you but because your attachment to belief that can save you from *Samsara.. *the world of suffering, cyclical rebirth, old age suffering and death.. sorta precludes that you don't understand the nature of Buddhism in which there is no 'Faith', you just try it, if it works do it.. one can only save themselves, there are no magicians, gods, baby sitters that will be able to save you. only your personal practice. i am not saying a religious person cant learn from Buddhism or the techniques of meditation wont help you in your religious practice.
try to find the movie "Little Buddha", nearly every rental place has it
http://www.amazon.com/Little-Buddha-Keanu-Reeves/dp/6305428360/ref=sr_1_1?ie=UTF8&s=dvd&qid=1266450382&sr=8-1-catcorrthere are teachers, the teachings and fellow travelers to help. but it is all up to you.
Buddhism is defined by the 4 Noble Truths, the 4th is the path, the 8 Fold Path. it is a life style that prevents you from acquiring more bad Karma while you practice, Meditation is the tool you practice with.
http://www.buddhanet.net/ ..check out the Buddhanet Audio section.
this is one of the best sites, it is Theravada, it has all the fundamental information.. one must first understand Theravada to fully understand the Mahayana.. Theravada practice is to enlighten oneself. mahayana is practiced to help others also, the Bodhisattva tradition is from the Mahayana. a Bodhisattva is one who takes a vow that when they are enlightened they will not enter nirvana until all beings on the earth are also enlightened. none will be left behind..such as Chenrezig, suspected to be an incarnation of the Buddha Amataba... AKA Quan Yin
http://www.FPMT.org has some lectures.
i started with Pema Chodron, When Things Fall Apart, dont bite the hook, ..
http://www.amazon.com/s/ref=nb_sb_ss_i_1_12?url=search-alias%3Ddigital-music&field-keywords=pema+chodron+mp3&sprefix=pema+chodronhttp://www.amazon.com/s/ref=nb_sb_ss_c_1_16?url=search-alias%3Dstripbooks&field-keywords=pema+chodron+audio&sprefix=pema+chodron+audhttp://www.amazon.com/s/ref=nb_sb_ss_sc_0_5?url=search-alias%3Daps&field-keywords=pema+chodron&sprefix=+pemaJack Kornfield
http://en.wikipedia.org/wiki/Jack_Kornfieldhttp://jackkornfield.org/index/homehe has some great audio books..
http://www.amazon.com/Buddhist-Meditation-Beginners-Jack-Kornfield/dp/1591795370/ref=sr_1_8?ie=UTF8&s=books&qid=1266449599&sr=8-8http://www.amazon.com/The-Beginners-Guide-To-Buddhism/dp/B000QZSMW2/ref=sr_1_14?ie=UTF8&s=dmusic&qid=1266449599&sr=8-14Buddhanet.net has a couple instruction lessons.. a beginner and higher levels, how to meditate.
there are Insight Meditation groups everywhere.. they are a good group
it's an interesting quest.. good Journey