parse text file with loop inside

i'm trying to parse a text file, the problem is that at certain points of the file, i need to loop through certain parts of the file. For example:

**tag1 : some info here
**tag2 : more info
**tag3 : info
**this is where i need to loop thru
**info, if there is no colons on the line.
**and i need to concatenate it

if the line contains a ":", there's no problem, but the minute i need to loop thru a part, i'm not sure how to handle it.

do until eof(1)
line input #1, s
if instr(s, ":") > 0 then
'grabs necessary info
else
'need to loop and get info, having problems here
endif

Try this.

dim colon as boolean

colon=false
do until eof(1)
line input #1, s
if instr(s, ":") then
colon=True
else
colon=False
endif

if colon=true
process one way
endif

if colon=false
process other way
endif

loop

sorry if i didn't explain clearly vbGrandpa, the problem is the way to handle the looping of specific areas of the file and to concatenate the text until the end of the loop. Once inside the loop, how do i grab each line of text and concatenate until the next time it hits a line containing a colon? Thanks

dim colon as boolean
dim concatstring as string

colon=false
concatstring=""
do until eof(1)
line input #1, s
if instr(s, ":") then
colon=True
else
colon=False
endif

if colon=true then
process one way
endif

if colon=false then
concatstring=concatstring & s
endif

loop

thanks vbGrandpa, works great now