no, this doesnt matter, the Wii will prefix a single digit number with the required number of zero's to make each section read as 3 characters.
Have you got Dynamic IP on your PC and then set the Static IP on the Wii? or have you set the PC up for Static IP?
keep the IP dynamic make a note of the IPaddress, DNS etc from "ipconfig/all" and then input everything EXACTLY the same as the PC but change ONLY the last two digits of the IP address by 10...
let me know how you get on