Help!Im a newby!!!Gallery into HTML...?

hi everybody

i've some kind of a problem!im a complete newby concerning php!
i know something bout html though!
so i designed a webpage for my band (www.blueshade.de.sr) and had now for bout a year an "html gallery"
but id love to use this kind of gallery, for my pictures, coz it just looks more proffessionally!!!
but i have no single clue how to embedd this gallery into a simple html code!!!!
could someone help me please or direct me to a really complete and easy tutorial?

would be really nice!

thx a lot

(my english isnt that good, im from luxembourg!:-/)