In general, for newer laptop models, is it generally possible to add an internal sound card, or are external USB cards the only option for many / most? Some come w/ discrete sound cards - most don't. Some new laptop specs I've looked at say under "Expandability": ExpressCard slot (ExpressCard/34 and ExpressCard/54), or other models may say: PCMCIA slots: 1 Type I/II; 1 ExpressCard/54, or other descriptions. ** Question is, what type of slot would current (reasonably priced - $100 or less?) notebook sound cards most likely need? ** What designation / wording in the specs description for open slots should I look for as far as future ability to add a sound card? Thanks.