I cant see them digging up old cable and replacing it,They will probably replace the filter in it and it should work Ok.I suppose if the box was damaged or cracked it would be replaced,Ive had the same cable for 5 years but I am only on 2mb.You do know that your 10 mb goes up to 20mb in may.So you should get the latest Modem with it.
I should have added,Make sure they run the cable to whatever room you want it in,Dont accept any poor instalation,They installed cable to my daughters front bedroom,when she needed it in the back bedroom,So they ran a cable from the front bedroom,down the middle of the hall into back bedroom,so now there is white cable all over the place ,Did not attempt to hide it,or tack it in out of the way,Just a mess,Make sure they dont do it to you,
I had a virgin media guy come and reconnect eveything up for me the other day. Ive had the 10mbps too. Its pretty cool.
All the virgin media guy does is connect your phone up to the outside box, change your set top box with a new one (dont know why they do this) and they give you a new modem. Didnt dig any of my path up what so ever.
All works sweet now. Hate being without the net :)