General photoshop installation question?

Hi everyone!! I'm new here so sorry if this is the wrong place to ask a technical question and sorry if this seems like a really odd//dumb question too >__>;; But I'd be really grateful if anybody with knowledge on this kind of thing could put my mind at rest.

Errm basically I had photoshop cs2 9.0 ((with imageready and bridge)) installed on my old windows XP computer and it's program size came up to 250 something MB. I recently got a new Vista computer and downloaded Photoshop CS2 tryout ((file size 362 MB)) and put in my old serial number and everything and it installed//activated online just fine. BUT the size of the installed program is now mammoth and much bigger!!! I checked it in the programs list in control panel and it comes up to a whooping 7.62 GB in size o___O;;

I just wondered what accounts for the significant increase in size as it's the same version I had before. I guess I'm just wanting to know if this is normal? Does it have anything to do with the settings i chose when installing the software?? x____X;; sorry again if this is the wrong place to post this, I just don't know who//where to ask.

Thanks to anybody who kindly reads and replies to this! : )

My CS3 is about 312 MB, so I'd say there is definately something wrong, but I have no idea what would cause this.

I just uninstalled & reinstalled photoshop and the program size has now gone down to 217 MB which sounds a lot more normal to me!! Thank goodness!!! I have no clue what was behind the original 7.62 GB size though o___O;; oh well, it's fixed now.

Thanks very much for replying hawkeye : )