> I was wondering if there is a easy way to add 900 subscribers to a list.
> I am still using 1.8c.

This works with 1.8c.
http://www.lsoft.com/manuals/1.8d/sitemgr/sitemgr.html#7.17

> Also is is possible to captur title and institution name, in addition to
> name and e-mail address, when people sign up for a list.

LISTSERV only stores name, e-mail address and options. However,
you can use the name field to store extra text:

ADD listname [log in to unmask] Mindy Humphrey President ABC Inc