The most common method is to use an audio interface, in your case one capable of instrument level inputs. Here is an example of one though there are many. Different prices, different features, and on and on.

[[url=http://[/URL]="http://www.musician…"]Musician's Muse - Line 6 TonePort UX1 USB Recording/Modeling Interface[/]="http://www.musician…"]Musician's Muse - Line 6 TonePort UX1 USB Recording/Modeling Interface[/]

japz, post: 347521 wrote: Guys i'm newbie here.
i'm very interesting using digital guitar effects such as guitar rig 4 and waves gtr3

and i want to record it internally on computer.
does anyone can recommend me best software can be used??
i'm already have nuendo 4.3.
but i'm still don't know how to insert plugins to record on that software.

please help Thanks..

EDIT: i had replied but i mis-read your post...sorry......