What is the best ISP for now,my Evdo 580 is messing up badly but it has not been this way before until recently.

There's nothing like "best" ISP.

All ISPs have their pros and cons.

I have used starcomms, mtn, glo, zoom and visafone. This is my order of preference with respect to user experience and usability.

MTN
Starcomms
Glo
Visafone
Zoom

I just bought starcomm neo modem this morning bt just noticed a small installation disk wt it,pls hw cn i instal d modem driver wt dat micro CD?.

Insert the CD and allow it run. I havnt seen or used that modem or its CD but most of them should autorun on insert.

Just got it right bt was told dat d activation wl b in d nxt 24hrs. I wl compare d speed and d consistency wt Mtn thereafter.