add one page in to another page html asap

1 if u cant do it dont apply 2 if u cant do it today dont apply ok i have a online mug styler i want added in to a new template ive made how ever every time i add it it ends up far on the right hand side throwing everything out of sync so wat i need you to to do i need u to addthe index file (which is the mug program) in to my page in the big blank space ive left for it i want it to look right and work both pages work at the moment seperatly so i just need them combined if u can do it and do it today quickly then appy thanks