[R] lm for matrix of response...

[vinod gullu]

Dear All,
1)Can I use lm() to fit more than one response in
single expression. e.g data is a matrix of these
variables
R1 R2 R3  X Y Z
1 2 1 1 2 3 
....
Now i wnat to fit R1:R3 ~ X+Y+Z.
2) How can i use Singular Value decomposition (SVD) as
an alternate to lsq.
Regards,