Crystal2000A

I have a real problem here.... By the way I'm new to this so pls excuse my ignorence......ANYWAYS..... I was currently trying to install Unigraphics V17 - design software and it said something like I have a windows NT version msvcrt.dll error that is not compatible with this software and might cause errors.... What should i do? By the way, I'm operating windows 98. Any help is much appreciated .... Audra