So.... Here is an example of what a Person in GEDCOM looks like as downloaded from ACOM.
Please note that 2 things:
1) The OBJE tag and FILE,FORM, TITL subtags. This is an old style of recording a picture, does RootsWeb support this style? You need to ask them this.
2) The NOTE tag and the CONT subtag. This is an old style of recording a NOTE, does RootsWeb support this style? You need to ask them this.
Also, I am not sure if RootsWeb would support an HTML link in the FILE subtag. You must also ask them this.