String in VB

Hi,
i have one string like this......
a=string1,string2,string3,string4,
here i don't want lat comma.....how can i remove that.....any body know abt it tell me....

regards,
Murugan.

VB Code:

dim str() as string
dim counter as integer
 
str = split(a,",")
 
for counter = 0 to Ubound(str)
     debug.print Trim(str(counter))
next

A = "Bla,Bla,Blaaaa,Blablalba"

Replace A,",",""

then 'A' will be the same : "BlaBlaBlaaaaBlablalba"