NFSU2 Problem With Sp2

[TYR4NT]

Hay there peeps, just wanted to see if i could get some help with the problem i have. Before i installed service pack 2 need for speed underground 2 was working fine, then i needed to install sp2 due to me getting a new 200gb hdd and it would prevent it from crashing. Then when i come to load up nfsu2 and at start up screen when rachel talks its like she stutters and lags. Is there any patch for this or anything i can do. Thanks

My Pc Specs Are:

Amd Athlon 2000xp 1.7ghz
512 Ram
Nvidia Winfast 64mb Gforce 4
200gb (7200rpm) Western Digital Hdd
Sony Dvd Burner
Soner Dvd Rom