Too difficult for me, please help.

I download data from a SAP table into an excel spreadsheet (2000), one field of which contains a string like:
A=1,a=5,H=/H/<ip>/S/sapdp97/H/oss001,S=01,M=000,U=OSS_RFC,Z=CPIC,X=LB

This string can contain values for A, a, B, G, g, H, I, i, L, M, N, N, O, Q, R, S, T, u, U, X, Z in the form A=<value> delimited by comma's. Not every string includes all options in which case it is just omitted.

For each row I would like to copy the values into columns with matching headers.

Looks like a nice enough challenge, but too hard for me to solve quickly. Thanks!