Yes, it's correct; you have a dynamic IP addy. It should not affect you in any way, unless you were running a server. In which case you would need an ISP supplying Static IP addys.
1999: Freeserve 48K Dial-Up => 2005: Wanadoo 1 Meg BB => 2007: Orange 2 Meg BB => 2008: Orange 8 Meg BB